Thanks for the bug report. Please be careful to only report one issue per bug report. I am making this about the 21:9 tiling overflow only. I think it might be related to bug 2153398, or even be the same issue. It's hard to tell when that one is a little more vague.
The ghost windows issue is probably covered by all the discussions linked in bug 1923075. ** Summary changed: - Window snapping on 21:9 secondary monitor: window overflows right edge on right-half snap + ghosted double-render during move/resize + Window snapping on 21:9 secondary monitor: window overflows right edge on right-half snap ** Description changed: When positioning windows on a 21:9 ultrawide secondary monitor (2560×1080), the window manager / compositor exhibits two problems: - Right-half snap overflows the screen. Snapping a window to the right half — either by dragging it to the right edge until the snap zone highlights and releasing, or with Super+Right — leaves the window shifted to the right so that it extends past the right edge of the monitor, instead of filling the right half. This persists after releasing the mouse button; it is the final placed state, not a mid-drag preview. Snapping to the left half (0–1280) works correctly. - Ghosted double-render during transitions. While moving or resizing a window (both during edge-snap with the mouse and after Super+Arrow), a stale copy of the window's previous frame remains painted on screen alongside the new position for a fraction of a second, producing a brief "double window" artifact (two overlapping title bars / two browser logos side by side). + Right-half snap overflows the screen. Snapping a window to the right + half — either by dragging it to the right edge until the snap zone + highlights and releasing, or with Super+Right — leaves the window + shifted to the right so that it extends past the right edge of the + monitor, instead of filling the right half. This persists after + releasing the mouse button; it is the final placed state, not a mid-drag + preview. Snapping to the left half (0–1280) works correctly. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: gnome-shell 50.1-0ubuntu1 ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0 Uname: Linux 7.0.0-22-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jun 5 21:55:34 2026 DisplayManager: gdm3 InstallationDate: Installed on 2026-05-25 (11 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) ProcEnviron: - LANG=pl_PL.UTF-8 - PATH=(custom, no user) - SHELL=/bin/bash - TERM=xterm-256color - XDG_RUNTIME_DIR=<set> + LANG=pl_PL.UTF-8 + PATH=(custom, no user) + SHELL=/bin/bash + TERM=xterm-256color + XDG_RUNTIME_DIR=<set> RelatedPackageVersions: mutter-common 50.1-0ubuntu2.1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) ** Package changed: gnome-shell (Ubuntu) => gnome-shell-ubuntu- extensions (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2155749 Title: Window snapping on 21:9 secondary monitor: window overflows right edge on right-half snap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-ubuntu-extensions/+bug/2155749/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
