I seem to be running across an increasing number of buttons that simply don't register clicks in Firefox. It's probably not FF's fault -- my money would be on webdevs leaning on chrome-only features -- but it does bring my Firefox session to a screeching halt and sends me back to chrome, usually after filling a form and trying to hit submit. It happens about once a week.

That's probably way too vague to be helpful unless someone else knows what I'm talking about, but if nobody does, I suppose knowing that could help motivate me to isolate and reproduce the issue next time it happens.