Dombi, please go to Help>Troubleshooting Information>Refresh TenFourFox… After the browser is 'refreshed', quit TenFourFox, then go to Macintosh HD>users>[your name]>Library>Caches in the Finder. Delete the Firefox folder. Restart TenFourFox.
I also had this crash upon just going to the LinkedIn home page (before logging in. I have not cleared cache in this particular case (will try that and the refresh later when I am ready to deal with another crash), however I almost never go there (but happened to today) and I'm sure I've cleared cache since the last time I was there, I have attached the crash report, where I tried it in safe mode to make sure it wasn't any of my extensions.
Because I don't have a good understanding of this bug right now, there is a decent chance I will not have sufficient time to fix it for FPR27.
Chris, if you're able to find a regression window, that would be helpful since I don't have any obvious clues as to what's going on. The fact 45.9 doesn't crash does allege this was in one of the FPR changes.
In all cases I tested:
'no crash' means: doesn't load anything after log-in except what's in the screenshot.
'crash' means: crashes more or less immediately after you click 'sign in' at
Noted. So we must have either enabled some code that crashes, or the code we added wasn't complete. Thanks for doing that, that gives me a place to start. Still no guarantees on timeframe. If nothing else, the crash will be wallpapered (no crash, but no load, as before).