Sadly, I must have deleted the tab while using 38.0.5, as when I re-installed 49, everything worked fine - no excessive processor or RAM usage...
I still need to know the answer to the last sentence in my comment #2, though... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1639015 Title: firefox loads windows/tabs, freezes - screen is not refreshed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1639015/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs