Add-ons mainly (which are presumably not causing the issue, since disabling them doesn’t help). Things like Clippings, where I have a lot of text saved, and NoScript/Adblock Plus, which I’d need to reconfigure for sites I visit. Bookmarks I could export/import, but I don’t know any way to import add-on settings
I have the same problem. This is more or less the only thread I found on the web about it.
I’m using Firefox Developer Edition 48.0a2 on Windows 7 Pro 64.
I tried disabling extensions, to no avail. Safe mode doesn’t change anything either.
Creating a new profile worked, but the problem appeared again after some time.
I suppose I have no other choice but to start over, and check jsfiddle periodically.
That’s good to know. I got as far as installing the extension @James_Hibbard recommended, then I decided I should have a cull of bookmarks before I move profiles - and I’m still working my way through that.
How’s that going? Are you using any kind of checker to find broken bookmarks etc?
This is something that I should really do, but have been putting off.