Broken scaling on app labels in app grid on multi monitor setups with varying scale factors

[Umayr Saghir]

Multi monitor with different scale factors causes app grid labels scaling to break when page scrolls from direction of adjacent monitor with higher scaling.

Steps to reproduce:
1) Configure a second monitor (higher scale factor) to be either on the left or right of the primary monitor (lower scale factor)
2) Open app grid
3) Scroll page so it moves toward the secondary monitor
4) Scroll page back to make it come back from the direction of the secondary monitor
5) Observe enlarged text (might require a few back and forth scrolls)

Disabled all extensions to rule out an extension being the cause.

Possibly same underlying cause as this bug?: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/2037143

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: gnome-shell 45.0-1ubuntu1
ProcVersionSignature: Ubuntu 6.5.0-5.5-generic 6.5.0
Uname: Linux 6.5.0-5-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 26 19:11:29 2023
DisplayManager: gdm3
InstallationDate: Installed on 2022-03-31 (544 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1)
RelatedPackageVersions: mutter-common 45.0-2ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Yes it sounds related to bug 2037143

[Umayr Saghir (nightmayr)]

Seeing the same thing with text in notifications when the higher scaled monitor is above the top panel.

Don't know if it's related to the cause of this multimonitor weirdness but the screenshot attached was taken on the 1920x1080 monitor but somehow has an image size of 2884 × 1622, even the secondary monitor is only 2560x1600. I can create a separate bug for that if unrelated to this one?

[Daniel van Vugt (vanvugt)]

The panel and dock also look too pixelated in that screenshot. Seems like the same bug.

[Umayr Saghir (nightmayr)]

The pixelation occurs the moment I bring up the screenshot interface. Toggling to screen recording doesn't show the same pixelation, only normal screenshots are affected.