When I use the error console, I'm seeing the same error about the undefined XML entity, and if I click on the corresponding link to view the source ("preferences:40:1"), I then get another window with another undefined XML entity error:
Location: chrome://messenger/content/viewSource.xul Line 62, Column 5: <key id="key_undo" key="&undoCmd.key;" modifiers="accel" command="cmd_undo"/> ----^ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1895012 Title: Undefined XML entity in about:preferences: <preftab id="MailPreferences" flex="1" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1895012/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs