Custom fields missing in ad entry form - Firefox

[techmonkey]

I have had several people report that in certain versions of Firefox, custom fields are not showing up in the ad entry form. One user reports this in Firefox 2.0.0.11

[Brian]

Is this before or after selecting a category, or does it matter at all? If you have any custom fields that are only active in certain categories then those will not appear until after the category is selected.