User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0 Build ID: 20150108202552 Steps to reproduce: 1. Set a break point in an onclick event 2. Watched the debugger hit the breakpoint. Actual results: I had to click twice to resume, either mouse or F8. Expected results: Only one mouse click or F8 press should be neccessary.
Seems very similar to https://bugzilla.mozilla.org/show_bug.cgi?id=771452 though in my case the script is not inline.
Was due to bad addons (addonbar+viewstate viewer). closing.