Drop-down Hotspots in Firefox

The painfiul process of testing WebHelp in Firefox continues.

I searched for a solution to this issue, Maybe I missed it but I've reached the point of diminishing return, if'n someone here has figured this out.

I have drop-down hotspots i my pages. On some pages browsed via Firefox, the text is expanded and on others, the hotspot requires a click (as it should).

Anyone know why the drop-down hotspots are automagically dropping down in Firefox?