russianneuromancer Reporter
	Description • 9 years ago

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20151124111548

Steps to reproduce:

Launch Firefox


Actual results:

Please look into attached screenshot. 
Instead of session restore there is only one empty tab. Bookmarks not displayed, addons not loaded, etc.
No single button react on clicks - not new tab, not settings, nothing.


Expected results:

Normal launch.

	russianneuromancer Reporter
	Comment 1 • 9 years ago

Addition comments:

I guess, at least judging by timing, it has something to do with GTK3 migration. But it's just my guess, same chances it may something to do with my upgrade to Kubuntu 15.10 from Kubuntu 15.04 (for example transition from GCC4 to GCC5 was done here, I not sure if it can make any harm).

When I faced with this issue before workaround was go to prefs.js and remove all lightweightThemes lines. It works for weeks for GTK3-enabled builds, but now it doesn't help anymore. Today I again get this issue on launch, open prefs.js and as usual enter "them" into search bar, but find nothing - there was no lightweightThemes lines, but I still get same issue, so something changed.

For some reason restore old prefs.js from backup (from November 6) helps but in some strange way:
1. I take prefs.js from November 6.
2. Remove lightweightThemes lines.
3. Start Firefox, but get same issue.
4. Exit from Firefox, start it again.
5. Everything fine.

	russianneuromancer Reporter
	Comment 2 • 9 years ago

I unable to reproduce this issue on Firefox 45.

	Michelle Funches - QA
	Comment 3 • 9 years ago

Fixed for future release. Setting to Resolved WFM