I have found that numbers in scientific notation (e.g 9.8E-9) are incorrectly sorted or filtered by Galaxy. Looks like the negative exponent is ignored and so if you sorting something like P values (see example below) then you find these ordered above P=1 instead at the other end of the list where P is near zero. In the example below a KEGG list is ordered on column 5 in asending order by galaxy. If you scroll to the bottom of the list, however, you will see the smallest numbers all of which are in scientific notation. I should note that I can can copy this into excel and excel will properly sort scientific notation. So this seems to be a specific problem with Galaxy. I found this problem with both filtering and sorting functions of Galaxy. 
Doug Cavener

410.53261.00.0000025cfa04146=Peroxisome
390.53251.00.0000038cfa04640=Hematopoietic cell lineage
290.59131.00.0000044cfa00980=Metabolism of xenobiotics by cytochrome P450
220.63101.00.000016cfa00140=Steroid hormone biosynthesis
280.56191.00.000027cfa05204=Chemical carcinogenesis
110.8531.00.000033cfa00511=Other glycan degradation
250.57161.00.000052cfa00600=Sphingolipid metabolism
90.9021.00.000074cfa00740=Riboflavin metabolism
230.58141.00.000079cfa00380=Tryptophan metabolism
150.6861.00.000096cfa04977=Vitamin digestion and absorption
220.56171.00.00017cfa00071=Fatty acid metabolism
220.56171.00.00017cfa05150=Staphylococcus aureus infection
260.53271.00.00017cfa00982=Drug metabolism - cytochrome P450
490.44421.00.00018cfa04142=Lysosome
560.42471.00.00024cfa04630=Jak-STAT signaling pathway
340.48351.00.00026cfa03320=PPAR signaling pathway
130.6851.00.00027cfa00531=Glycosaminoglycan degradation
200.56211.00.00043cfa04975=Fat digestion and absorption
220.54241.00.00043cfa00830=Retinol metabolism
190.56201.00.00053cfa00565=Ether lipid metabolism
140.61111.00.00092cfa00591=Linoleic acid metabolism
200.53281.00.0011cfa02010=ABC transporters
220.50321.00.0015cfa00280=Valine, leucine and isoleucine degradation
330.44441.00.0020cfa04974=Protein digestion and absorption
150.56211.00.0022cfa03440=Homologous recombination
140.56191.00.0028cfa00650=Butanoate metabolism
350.42481.00.0035cfa05323=Rheumatoid arthritis
160.52311.00.0043cfa00350=Tyrosine metabolism
160.52311.00.0043cfa05320=Autoimmune thyroid disease
120.57151.00.0044cfa00592=alpha-Linolenic acid metabolism
150.52301.00.0054cfa00760=Nicotinate and nicotinamide metabolism
210.47391.00.0054cfa05144=Malaria
840.36661.00.0059cfa04080=Neuroactive ligand-receptor interaction
160.48331.00.0091cfa05143=African trypanosomiasis
120.52291.00.011cfa00340=Histidine metabolism
140.48340.990.015cfa05330=Allograft rejection
90.56181.00.015cfa04614=Renin-angiotensin system
31.011.00.021cfa00780=Biotin metabolism
350.38560.990.021cfa00240=Pyrimidine metabolism
150.44430.990.030cfa04940=Type I diabetes mellitus
110.48360.990.032cfa00563=Glycosylphosphatidylinositol(GPI)-anchor biosynthesis
290.38540.980.032cfa04512=ECM-receptor interaction
200.41500.980.034cfa04622=RIG-I-like receptor signaling pathway
90.50320.990.037cfa00100=Steroid biosynthesis
100.48370.990.042cfa04950=Maturity onset diabetes of the young
70.54230.990.042cfa03450=Non-homologous end-joining
60.55220.990.055cfa00430=Taurine and hypotaurine metabolism
60.55220.990.055cfa00790=Folate biosynthesis
220.38580.970.060cfa05140=Leishmaniasis
120.43460.970.062cfa00512=Mucin type O-Glycan biosynthesis
30.7540.990.068cfa00061=Fatty acid biosynthesis
30.7540.990.068cfa00232=Caffeine metabolism
230.37620.960.070cfa04115=p53 signaling pathway
290.36640.960.071cfa00564=Glycerophospholipid metabolism
80.47380.980.071cfa00120=Primary bile acid biosynthesis
200.38590.960.074cfa00561=Glycerolipid metabolism
190.38570.960.076cfa04612=Antigen processing and presentation
480.34740.950.076cfa05152=Tuberculosis
180.38530.960.077cfa00510=N-Glycan biosynthesis
21.011.00.077cfa00290=Valine, leucine and isoleucine biosynthesis
160.39520.960.079cfa00500=Starch and sucrose metabolism
160.39520.960.079cfa04621=NOD-like receptor signaling pathway
120.41490.960.080cfa00410=beta-Alanine metabolism
70.47390.970.093cfa00604=Glycosphingolipid biosynthesis - ganglio series
330.34720.940.094cfa05146=Amoebiasis
80.44410.960.097cfa00900=Terpenoid backbone biosynthesis
40.57150.980.099cfa00460=Cyanoamino acid metabolism
40.57150.980.099cfa00750=Vitamin B6 metabolism
120.40510.950.10cfa00052=Galactose metabolism
120.40510.950.10cfa00983=Drug metabolism - other enzymes
90.43460.960.10cfa00040=Pentose and glucuronate interconversions
50.50320.970.11cfa04122=Sulfur relay system
260.35700.930.12cfa04064=NF-kappa B signaling pathway
100.40510.940.13cfa05332=Graft-versus-host disease
170.36630.920.13cfa00480=Glutathione metabolism
210.35680.920.13cfa05133=Pertussis
70.44450.950.13cfa00770=Pantothenate and CoA biosynthesis
120.38610.920.15cfa03410=Base excision repair
210.34710.900.15cfa04976=Bile secretion
150.36650.900.16cfa04978=Mineral absorption
40.50320.960.16cfa00072=Synthesis and degradation of ketone bodies
500.32780.880.16cfa00230=Purine metabolism
80.40510.930.16cfa05310=Asthma
60.43460.940.17cfa00603=Glycosphingolipid biosynthesis - globo series
20.6780.980.19cfa00785=Lipoic acid metabolism
80.38550.900.20cfa00062=Fatty acid elongation
80.38550.900.20cfa03430=Mismatch repair
110.35670.880.22cfa05340=Primary immunodeficiency
120.34730.850.25cfa00260=Glycine, serine and threonine metabolism
400.31810.810.25cfa04145=Phagosome
420.31820.800.25cfa05164=Influenza A
130.33750.830.27cfa00970=Aminoacyl-tRNA biosynthesis
11.011.00.28cfa00472=D-Arginine and D-ornithine metabolism
40.40510.890.29cfa00130=Ubiquinone and other terpenoid-quinone biosynthesis
40.40510.890.29cfa00920=Sulfur metabolism
80.35690.840.29cfa00630=Glyoxylate and dicarboxylate metabolism
360.30850.760.30cfa04514=Cell adhesion molecules (CAMs)
100.33750.810.31cfa00640=Propanoate metabolism
20.50320.930.31cfa00730=Thiamine metabolism
70.35680.840.31cfa01040=Biosynthesis of unsaturated fatty acids
140.32770.780.32cfa05134=Legionellosis
440.30860.740.32cfa05168=Herpes simplex infection
110.32760.790.33cfa00860=Porphyrin and chlorophyll metabolism
120.32790.770.36cfa00620=Pyruvate metabolism
310.30870.700.38cfa05145=Toxoplasmosis
60.33750.790.38cfa00670=One carbon pool by folate
120.31810.730.39cfa04672=Intestinal immune network for IgA production
120.31810.730.39cfa04973=Carbohydrate digestion and absorption
140.30840.720.40cfa00520=Amino sugar and nucleotide sugar metabolism
110.31830.720.41cfa05219=Bladder cancer
230.29880.690.41cfa05222=Small cell lung cancer
80.31810.720.44cfa00601=Glycosphingolipid biosynthesis - lacto and neolacto series
80.31810.720.44cfa04966=Collecting duct acid secretion
50.31800.730.47cfa00533=Glycosaminoglycan biosynthesis - keratan sulfate
10.50320.920.48cfa00300=Lysine biosynthesis
100.29890.670.48cfa03030=DNA replication
120.29900.620.51cfa04930=Type II diabetes mellitus
330.28920.570.51cfa04110=Cell cycle
160.28910.590.53cfa05416=Viral myocarditis
20.33750.790.53cfa00400=Phenylalanine, tyrosine and tryptophan biosynthesis
240.28930.570.53cfa04972=Pancreatic secretion
50.29890.680.53cfa00360=Phenylalanine metabolism
130.27940.530.59cfa00310=Lysine degradation
80.27950.540.62cfa00250=Alanine, aspartate and glutamate metabolism
80.27950.540.62cfa00514=Other types of O-glycan biosynthesis
40.27950.590.63cfa00450=Selenocompound metabolism
40.27950.590.63cfa01210=2-Oxocarboxylic acid metabolism
110.26970.490.64cfa04330=Notch signaling pathway
140.26960.490.64cfa00330=Arginine and proline metabolism
40.251000.530.69cfa00053=Ascorbate and aldarate metabolism
80.251000.450.70cfa00270=Cysteine and methionine metabolism
90.251000.440.70cfa04623=Cytosolic DNA-sensing pathway
180.25980.390.71cfa04210=Apoptosis
50.241070.450.73cfa04140=Regulation of autophagy
140.241040.330.77cfa00010=Glycolysis / Gluconeogenesis
70.231110.380.77cfa05020=Prion diseases
80.241090.370.77cfa00051=Fructose and mannose metabolism
280.251010.280.79cfa04380=Osteoclast differentiation
10.201290.580.80cfa00524=Butirosin and neomycin biosynthesis
60.221160.350.80cfa05216=Thyroid cancer
310.251020.250.81cfa05012=Parkinson's disease
150.231100.270.82cfa04920=Adipocytokine signaling pathway
160.241090.270.82cfa04350=TGF-beta signaling pathway
230.241050.240.82cfa05142=Chagas disease (American trypanosomiasis)
90.221140.290.82cfa03420=Nucleotide excision repair
170.231120.240.83cfa05410=Hypertrophic cardiomyopathy (HCM)
350.241030.220.83cfa05202=Transcriptional misregulation in cancer
100.221160.260.84cfa05014=Amyotrophic lateral sclerosis (ALS)
130.221150.230.85cfa04370=VEGF signaling pathway
260.241080.200.86cfa05160=Hepatitis C
310.241060.190.86cfa00190=Oxidative phosphorylation
760.25990.170.86cfa04151=PI3K-Akt signaling pathway
70.211270.240.87cfa04742=Taste transduction
150.221180.180.88cfa05218=Melanoma
140.221220.170.90cfa05412=Arrhythmogenic right ventricular cardiomyopathy (ARVC)
170.221200.150.90cfa05414=Dilated cardiomyopathy
40.181400.230.90cfa00534=Glycosaminoglycan biosynthesis - heparan sulfate / heparin
50.191360.200.90cfa00030=Pentose phosphate pathway
210.221170.130.91cfa04726=Serotonergic synapse
150.211240.130.92cfa03008=Ribosome biogenesis in eukaryotes
40.171450.190.92cfa04320=Dorso-ventral axis formation
70.191340.160.92cfa04960=Aldosterone-regulated sodium reabsorption
220.221210.100.93cfa04066=HIF-1 signaling pathway
240.221190.110.93cfa04670=Leukocyte transendothelial migration
280.221160.100.93cfa05161=Hepatitis B
430.231130.0950.93cfa04144=Endocytosis
140.201280.110.94cfa05220=Chronic myeloid leukemia
50.171460.150.94cfa04744=Phototransduction
60.181420.130.94cfa04130=SNARE interactions in vesicular transport
120.191330.0790.96cfa05211=Renal cell carcinoma
230.211250.0670.96cfa05162=Measles
40.151540.110.96cfa03020=RNA polymerase
100.181410.0630.97cfa00562=Inositol phosphate metabolism
40.141610.0790.97cfa04710=Circadian rhythm
100.171460.0470.98cfa05210=Colorectal cancer
150.181390.0340.98cfa04914=Progesterone-mediated oocyte maturation
200.191330.0280.98cfa04270=Vascular smooth muscle contraction
400.211230.0320.98cfa04510=Focal adhesion
80.161500.0480.98cfa05213=Endometrial cancer
100.151540.0150.99cfa05212=Pancreatic cancer
100.161490.0290.99cfa04260=Cardiac muscle contraction
100.161530.0210.99cfa05214=Glioma
130.161510.0120.99cfa05215=Prostate cancer
140.171480.0160.99cfa04012=ErbB signaling pathway
140.181440.0250.99cfa04620=Toll-like receptor signaling pathway
150.171460.0170.99cfa04650=Natural killer cell mediated cytotoxicity
170.181430.0140.99cfa04114=Oocyte meiosis
240.181370.0100.99cfa04910=Insulin signaling pathway
320.201300.0150.99cfa05010=Alzheimer's disease
330.201310.0100.99cfa05016=Huntington's disease
80.151580.0200.99cfa04730=Long-term depression
90.151570.0160.99cfa03018=RNA degradation
90.151570.0160.99cfa04664=Fc epsilon RI signaling pathway
00.02040.381.0cfa00471=D-Glutamine and D-glutamate metabolism
10.0362010.00141.0cfa00020=Citrate cycle (TCA cycle)
10.0451980.00761.0cfa03060=Protein export
10.0531960.0181.0cfa04964=Proximal tubule bicarbonate reclamation
10.0591940.0301.0cfa00532=Glycosaminoglycan biosynthesis - chondroitin sulfate / dermatan sulfate
100.131710.00171.0cfa04912=GnRH signaling pathway
100.131720.00141.0cfa04070=Phosphatidylinositol signaling system
100.141630.00531.0cfa05100=Bacterial invasion of epithelial cells
110.0871861.6E-71.0cfa04310=Wnt signaling pathway
110.131700.00121.0cfa04666=Fc gamma R-mediated phagocytosis
110.151560.00871.0cfa04970=Salivary secretion
130.0831871.9E-91.0cfa05034=Alcoholism
130.131670.000671.0cfa04660=T cell receptor signaling pathway
150.121730.0000581.0cfa04360=Axon guidance
150.121730.0000581.0cfa04530=Tight junction
150.121750.0000101.0cfa04390=Hippo signaling pathway
150.141640.000651.0cfa04722=Neurotrophin signaling pathway
180.131690.0000421.0cfa03010=Ribosome
180.141650.000151.0cfa04120=Ubiquitin mediated proteolysis
180.161520.00351.0cfa05322=Systemic lupus erythematosus
20.0162038.1E-151.0cfa03040=Spliceosome
20.0282023.3E-81.0cfa03015=mRNA surveillance pathway
260.191350.00881.0cfa03013=RNA transport
270.151590.0000191.0cfa05203=Viral carcinogenesis
280.171450.00181.0cfa04141=Protein processing in endoplasmic reticulum
280.171480.000871.0cfa04062=Chemokine signaling pathway
290.171470.000941.0cfa05169=Epstein-Barr virus infection
30.0382005.6E-81.0cfa04727=GABAergic synapse
30.0521970.0000141.0cfa04720=Long-term potentiation
30.0671890.000451.0cfa04961=Endocrine and other factor-regulated calcium reabsorption
30.0701880.000761.0cfa04962=Vasopressin-regulated water reabsorption
30.0911840.00901.0cfa05033=Nicotine addiction
300.151550.0000381.0cfa04810=Regulation of actin cytoskeleton
310.181380.00401.0cfa04020=Calcium signaling pathway
340.141600.00000111.0cfa04010=MAPK signaling pathway
40.0611920.0000101.0cfa04971=Gastric acid secretion
40.0981820.00501.0cfa03022=Basal transcription factors
460.191320.00171.0cfa05166=HTLV-I infection
50.0431996.9E-111.0cfa04728=Dopaminergic synapse
50.0561951.4E-71.0cfa04723=Retrograde endocannabinoid signaling
50.0621900.00000111.0cfa04540=Gap junction
50.111770.00821.0cfa05030=Cocaine addiction
50.111800.00661.0cfa03050=Proteasome
50.121750.0101.0cfa04340=Hedgehog signaling pathway
60.0591933.4E-81.0cfa04725=Cholinergic synapse
60.0611917.4E-81.0cfa04724=Glutamatergic synapse
60.101810.00121.0cfa05031=Amphetamine addiction
60.121740.00841.0cfa05217=Basal cell carcinoma
60.121760.00451.0cfa05223=Non-small cell lung cancer
620.211260.00381.0cfa05200=Pathways in cancer
660.141621.1E-111.0cfa04740=Olfactory transduction
70.111780.00161.0cfa04520=Adherens junction
70.131660.0121.0cfa05221=Acute myeloid leukemia
80.0901850.0000141.0cfa04713=Circadian entrainment
80.0901850.0000141.0cfa04916=Melanogenesis
80.0951830.0000441.0cfa05032=Morphine addiction
80.111790.000751.0cfa05132=Salmonella infection
80.131680.00681.0cfa04150=mTOR signaling pathway
80.131680.00681.0cfa04721=Synaptic vesicle cycle
90.141610.00951.0cfa04662=B cell receptor signaling pathway
320.6871.01.2E-8cfa03460=Fanconi anemia pathway
340.6491.04.2E-8cfa00590=Arachidonic acid metabolism
850.45401.04.9E-7cfa04060=Cytokine-cytokine receptor interaction
340.60121.05.3E-7cfa04610=Complement and coagulation cascades
4080.38601.08.6E-11cfa01100=Metabolic pathways

--

Douglas R. Cavener
Professor and Head
Department of Biology
110 Life Science Building
Pennsylvania State University
University Park, PA 16802

(814) 865-4562     Dept Office
(814) 865-9790 Lab Office
(814) 865-9131  Fax
drc9@psu.edu