This is because the Wayland surface includes the window shadows which go out to the edge of the red rectangle. It's an understandable bug but could always be better.
** Tags added: multimonitor ** Changed in: gnome-shell (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2037141 Title: Multi monitor with different scale factors causes windows to use scale factor of adjacent monitor before arriving at boundary Status in gnome-shell package in Ubuntu: Confirmed Bug description: On a dual/multi monitor setup, if the monitor adjacent uses a different scale factor, when moving an application window to the boundary the application will change its scaling just slightly before the actual apparent window starts crossing over. Taking a look at looking glass shows the transition occurs when the MetaSurfaceActorWayland region (larger than the actual window) meets the boundary. My monitor configuration is: 1920X1080 monitor using 100% scaling 2560X1600 monitor using 150% scaling 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: Sat Sep 23 00:22:04 2023 DisplayManager: gdm3 InstallationDate: Installed on 2022-03-31 (540 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1) RelatedPackageVersions: mutter-common 45.0-1ubuntu1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2037141/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
