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[AndreK <2129169@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In short: KiCAD <=9.0.5 has always worker perfectly fine in Ubuntu <=25.04
After I upgraded to Ubuntu 25.10 - both work and home computer's kicad installation randomly stops responding to some types of objects, clicking tabs, or values in tables.  Closing and opening said window may fix it.

Please see
https://gitlab.com/kicad/code/kicad/-/issues/22046#note_2833961993

I have tried with both apt and flatpak as KiCAD source.

To reproduce: 
start kicad w/o GDK_BACKEND=x11
observe that the about window tabs do not respond. (click 8 tabs)
start kicad with GDK_BACKEND=x11
observe that the about window tabs respond, for a while - try to switch between 8 tabs, if it works, it may stop doing so in a while/on next window opening. This is very easy to reproduce.

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: libgtk-4-1 4.20.1+ds-2
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 21 11:15:05 2025
InstallationDate: Installed on 2024-05-04 (535 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
SourcePackage: gtk4
UpgradeStatus: Upgraded to questing on 2025-10-09 (12 days ago)

** Affects: gtk4 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing wayland-session

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https://bugs.launchpad.net/bugs/2129169

Title:
  GDK_BACKEND=x11  randomly stops working per window

Status in gtk4 package in Ubuntu:
  New

Bug description:
  In short: KiCAD <=9.0.5 has always worker perfectly fine in Ubuntu <=25.04
  After I upgraded to Ubuntu 25.10 - both work and home computer's kicad installation randomly stops responding to some types of objects, clicking tabs, or values in tables.  Closing and opening said window may fix it.

  Please see
  https://gitlab.com/kicad/code/kicad/-/issues/22046#note_2833961993

  I have tried with both apt and flatpak as KiCAD source.

  To reproduce: 
  start kicad w/o GDK_BACKEND=x11
  observe that the about window tabs do not respond. (click 8 tabs)
  start kicad with GDK_BACKEND=x11
  observe that the about window tabs respond, for a while - try to switch between 8 tabs, if it works, it may stop doing so in a while/on next window opening. This is very easy to reproduce.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: libgtk-4-1 4.20.1+ds-2
  ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
  Uname: Linux 6.17.0-5-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Oct 21 11:15:05 2025
  InstallationDate: Installed on 2024-05-04 (535 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  SourcePackage: gtk4
  UpgradeStatus: Upgraded to questing on 2025-10-09 (12 days ago)

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