[galaxy-dev] Stop autoselecting in drop-down menus

Hi,

I was wondering if there is a way to prevent auto-selecting an option for Running a workflow? Quiet often users (especially novices) would re-run workflows without checking much the data that goes in thinking it will be the same as before. But because the options in drop down menus are auto-populated it seems the top option is always selected by default. For example, previously we had a single fasta file as reference and in the process of a workflow few other fasta files get generated. they appear above the previous fasta in the selection, so without paying attention people skip the input without really checking it.

Can we manually add a "blank" selection at the top to force users to select something?

Alex