Public bug reported:
Initially I thought this was an issue with IntelliJ and filed a bug there:
https://youtrack.jetbrains.com/issue/IDEA-323780/Maximizing-the-the-window-sometimes-causes-clicks-on-a-lower-fraction-to-pass-through-to-the-window-behind
But when I had the same issue with GIMP, I realized it's an Ubuntu or
GNOME issue instead. I am assuming this is a gnome-shell problem.
Every once in a while, when I maximize or tile (Win+Right) the IntelliJ window,
a bottom fraction of the window (somewhere around a quarter) becomes impossible
to interact with, with the mouse. Clicking in that lower area will give focus
to the thing behind IntelliJ, and if it's a window, raise it to the foreground.
if I restore the window so that it is not maximized, the entire window is
interactive with the mouse once again.
This also happened with GIMP.
The attached "Screencast" is a recording. I had to crop it to hide personal
information. The attached screenshot shows the state of my screen so you have
context, with a bright green color used to replace personal information.
For the first 10s of the recording, I simply moused over to show how the
cursor changes around a quarter from the bottom of the screen.
For the next 10s, I left click, then move, then left click, then move,
until focus changes to Sublime, the window behind IntelliJ.
For the remainder of the video I show that right-clicking and mousing
over works fine on the top three quarters, until I reach the bottom
again, and then the right click is sent to Sublime.
Ubuntu 23.04
gnome-shell version 44.2-0ubuntu1
ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: gnome-shell 44.2-0ubuntu1
ProcVersionSignature: Ubuntu 6.2.0-24.24-generic 6.2.12
Uname: Linux 6.2.0-24-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 5 12:05:46 2023
DisplayManager: gdm3
InstallationDate: Installed on 2022-09-19 (289 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64
(20220809.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
TERM=screen-256color
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 44.2-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lunar wayland-session
** Attachment added: "Screencast demo of the issue"
https://bugs.launchpad.net/bugs/2026194/+attachment/5684050/+files/Screencast%20from%202023-07-05%2011-50-40.webm
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Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/2026194
Title:
When clicking on some maximized or tiled windows, focus on roughly the
lower quarter falls to the window behind
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