Public bug reported: *Steps to reproduce:* I am not sure about the exact conditions for this, and the behavior is not 100% consistent. So I am just going to summarize how this usually happens for me.
Currently this is reported as a bug in mate-terminal, because this is what I clicked on when I did the bug report with ubuntu-bug -w. I run a triple monitor setup: - A: Laptop (Dell XPS 13), full HD. - B, C: Two full HD external monitors, connected via HDMI, via a USB-C Hub. Perhaps it is enough to test this on two monitors instead of three. Currently I have "Undecorate maximized windows" enabled in MATE Tweak, but I remember it happened without that before. (I use that to get rid of the title bar in Brave browser. Doing this in the application itself was causing problems) I have a full-screen application on monitor B. Currently this is PhpStorm, previously the same happend with Brave browser. I have another full-screen application on monitor C. Currently this is Brave browser. I open a non-maximized window on top, and move it to the edge so that it overlaps with multiple monitors (most importantly B and C). Often this is a terminal, but currently it is the "MATE Tweak" config window / dialog. should be displayed behind the maximized window on monitor C, but in front of the maximized window on B. I focus the non-maximized window (e.g. terminal). Then I focus the maximized window on monitor C. *What I expect to happen* When I focus the non-maximized window, that window is displayed on top of all others. When I focus the maximized window on monitor C, the non-maximized window (e.g. terminal) should be displayed behind the maximized window on monitor C, but in front of the maximized window on B. *What happens instead, v1* When I focus the non-maximized window, that window is displayed on top of all others -> good. When I focus the maximized window on monitor C, the maximized window on monitor B also jumps to the front, so the non-maximized window (e.g. terminal) gets hidden behind. *What happens instead, v2* When I focus the non-maximized window, it appears in the front on monitor C, but it disappears behind the maximized window on monitor B, even if that window does not have focus. *Additional info* Overall I find the behavior with multiple monitors buggy. The system seems to get confused every time I connect or disconnect external monitors. But this is a problem for another day. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: mate-terminal 1.20.0-4 ProcVersionSignature: Ubuntu 4.15.0-72.81-generic 4.15.18 Uname: Linux 4.15.0-72-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.9 Architecture: amd64 CurrentDesktop: MATE Date: Thu Dec 19 13:02:55 2019 ExecutablePath: /usr/bin/mate-terminal InstallationDate: Installed on 2019-01-12 (340 days ago) InstallationMedia: Ubuntu-MATE 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: mate-terminal UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: mate-terminal (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1857008 Title: Active window hidden behind other on second monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mate-terminal/+bug/1857008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs