User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0 Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0 I have five tab groups. Four of them have one or two tabs and one has 9. There is also a pinned tab (GMail). Every time I start the browser the tabs from the 9-tabs group wonder in some, seemingly randomly selected, other group. Reproducible: Always Steps to Reproduce: 1. Sort your tabs nicely 2. Close the browser 3. Run the browser Actual Results: Tabs shuffled around Expected Results: I would expect the tab groups to keep their tabs after restart
Hey Alex, I'm pretty sure that this is a dupe of bug 628188. This problem should be gone if you manage to find the add-on(s) causing this problem and disable them.
Thanks Tim! I'll try as soon as I manage to trigger the problem.
I cannot reproduce the problem at all with 4.0.1. I have to say, even with the previous version sometimes it'd go for days without breaking tab/group layout.
Yeah, the patch from bug 635975 landed in 4.0.1.