A big one that's problematic is LastPass. It can hang the browser for a long time, 10+ seconds or so. Very annoying.
Please try out the development version of lastpass, as most of the e10s compatibility work has gone into that:
https://addons.mozilla.org/en-us/firefox/addon/lastpass-pass...
Is there an e10s_okay extension or should I just run ff dev ed. and see what happens?
I'm running:
Lastpass
uBlock
Zotero
> "It's All Text"
I hope that gets fixed. That's one of the most useful extensions I have installed, and about the first thing I install when starting afresh in Firefox.
Re:Firefox 48 Beta, Release, and E10S
by zeemonkee3 on Tuesday June 07, 2016 @10:52AM
(#11854887)
How about vimperator? Vimfx is OK as a stop-gap but that's one extension I wouldn't want to lose permanently.
Here is the Firefox bug report for Vimperator don't working with e10s:
https://bugzilla.mozilla.org/show_bug.cgi?id=1100918
The Vimperator developers are working on it here:
Re:Firefox 48 Beta, Release, and E10S
by saidajigumi on Tuesday June 07, 2016 @12:52PM
(#11855759)
Nope, vimperator doesn't work under e10s at the moment. See the tracking issue here:
It might be worth downloading Firefox Developer Edition (which uses a separate profile) and installing your usual suite of extensions to check they all still work.
The only extension I personally know is weird under E10S is "It's All Text", where the edit button doesn't appear on textareas until you switch to a different tab and back. Other extensions like uBlock Origin, Tree Style Tabs, Open In Browser, HTTPS Everywhere, Document Font Toggle all work fine.