I just experienced a bug (and I have reported it). The warning popup requested I report it.
I think you'd get a lot more feedback [do you even need more?!] if there was a Report Bug link in the Help drop-down menu. Selecting that would bring the user straight here (while the problem is frsh in their mind). I imagine some people might give up (or mis-report MekHQ issues in the MegaMek page).
Hope that helps,