Like bug 1238289, now with scope of TB. Multiple refereces to stylesheets makes the rules showing doubled or tripled in DOM. I'm not sure about this but I think this uses more memory and could slightly slow down TB. But cleaning this makes it easier to find the rules in DOMi.
Created attachment 8711443 [details] [diff] [review] removeStylesheetLinks.patch I've found the cause for the doubled global.css rules. It was the link in chat-messenger-overlay.xul. Now TB should be cleaned up of this duplications. Aleth, I added you because I also touched chat files.
Attachment #8711443 - Flags: review?(philipp) → review+
Status: ASSIGNED → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → FIXED
Target Milestone: --- → Thunderbird 47.0
You need to log in before you can comment on or make changes to this bug.