Public bug reported:
On Ubuntu 24.04.3 LTS with Evolution 3.52.3, the message list and main
window fail to display properly when the laptop’s built-in display is
set to 225% fractional scaling.
Symptoms:
- Main pane appears blank/black.
- Terminal shows repeated warnings:
Gtk-WARNING **: drawing failure for widget 'GtkPaned' / 'GtkBox': invalid
value (typically too big) for the size of the input.
Environment:
- Multi-monitor setup (2 external monitors at 100%, laptop built-in display at
225%).
- Ubuntu session type: X11 (not Wayland).
- Bug resolves when scaling is adjusted from 225% → 200%.
Steps to reproduce:
1. Set built-in display to 225% fractional scaling in GNOME Settings → Displays.
2. Launch Evolution.
3. Observe blank/black UI panes and GTK warnings.
4. Change scaling back to 200% → issue resolved.
Expected result:
Evolution should render correctly regardless of fractional scaling factor.
Actual result:
UI panes are not drawn at certain scaling factors (e.g. 225%).
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: evolution 3.52.3-0ubuntu1
ProcVersionSignature: Ubuntu 6.14.0-29.29~24.04.1-generic 6.14.8
Uname: Linux 6.14.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 24 06:10:45 2025
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: evolution
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: evolution (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug evolution fractional-scaling gtk multi-monitor noble
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Desktop Bugs, which is subscribed to evolution in Ubuntu.
https://bugs.launchpad.net/bugs/2125563
Title:
Evolution UI panes fail to render correctly when using multi-monitor
fractional scaling (225%) on Ubuntu 24.04.3
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