Ubuntu 24.10 (Oracular Oriole) has reached end of life, so this bug will
not be fixed for that specific release.
** Changed in: mutter (Ubuntu Oracular)
Status: Incomplete => Won't Fix
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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
Status in Mutter:
Fix Released
Status in mutter package in Ubuntu:
Incomplete
Status in mutter source package in Noble:
Incomplete
Status in mutter source package in Oracular:
Won't Fix
Bug description:
[ Impact ]
Clicking on some maximized or fullscreen windows may not respond and
the clicks fall through to the window behind.
[ Test Plan ]
If auto login is not enabled, enable auto login and reboot. The issue
can immediately be observed with first party apps such as the software
settings GUI where apt sources, update settings, and GPU drivers are
located. Have anything open behind it and then try to use it. Dragging
the window to another location outside of the bounds of its default
size and position makes it completely unusable because it clicks
through to the window behind it no matter where you click. If the
desktop is behind it, then the window will be usable but entities on
the desktop will be clicked if they're located beneath what you
clicked on in the window. This behavior is identical for any affected
application.
[ Where problems could occur ]
The bug and the fix appears to be X11-specific, but that can affect
Wayland sessions too via Xwayland. The risk here is in the sizing and
interactivity of any X11 window. Mistakes in this area can result in
other bugs similar to this one where the visual boundaries of a window
do not match with its input boundaries.
[ Original description ]
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)
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