Thanks for the report. I cannot observe the issues you describe. I'm running a fully up-to-date 19.10, with the default GNOME desktop, and I can tile the unmaximized thunderbird window to the leftmost half of the screen by dragging it to the top-left corner, and I can also resize the window so that the width is < half the width of the screen. The latter probably depends on your screen resolution, and on the layout you use in thunderbird. Can you share details on those? And can you test again the first problem and confirm you can reliably reproduce it?
** Changed in: thunderbird (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848475 Title: TB with Gnome - main window size problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1848475/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs