User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0 Build ID: 20160315153207 Steps to reproduce: Open new tab: Press Ctrl-T or click "+" icon Actual results: new tab is created but I'm still in current tab Expected results: current tab should have switched to new tab. This behaviour is different since a few days. Seems, since FF 45.01. Don't mix it up with "Open link in new tab", this works still correctly (tab switching according to settings > general).
Hi, I just thought, it could be due to an addon update - and yes, that's the reason. Sorry for bothering you!
FYI: It's "New Tab Homepage View" that's no longer compatible. The latest addon update is old. So, seems to be an internal change in FF V45.