https://bugs.documentfoundation.org/show_bug.cgi?id=141578
--- Comment #100 from Alex Tomé <[email protected]> --- "Adding another confirmation with Plasma 6.7.2 and LibreOffice 26.2.4.2." I can confirm that this issue is still reproducible with a recent KDE/Wayland environment. ### Software environment * LibreOffice 26.2.4.2 * KDE Plasma 6.7.2 * Session type: Wayland * Desktop session: KDE * VCL: kf6 (cairo+wayland) ### Hardware * Monitor 1: BenQ PD2700Q (native resolution) * Monitor 2: LG 27MP400-B (native resolution) ### Steps to reproduce 1. Start LibreOffice using the default KF6 VCL backend. 2. Open a Writer document. 3. Move the LibreOffice window between the two monitors. ### Actual result The LibreOffice user interface changes size noticeably when moving the window between monitors. The UI scaling becomes inconsistent and makes working across both displays uncomfortable. ### Expected result The LibreOffice UI should maintain a consistent physical size when moving between monitors, according to KDE display scaling settings. ### Scaling tests performed Initial configuration: * BenQ PD2700Q: 130% scaling * LG 27MP400-B: 100% scaling Additional tests: * Both monitors at 125% scaling. * Both monitors at 100% scaling. The issue remains reproducible even with both monitors configured at 100%, so it does not appear to be limited to mixed fractional scaling. ### Backend comparison * Default backend (`VCL: kf6 (cairo+wayland)`): issue reproducible. * `SAL_USE_VCLPLUGIN=kf6`: issue reproducible. * `SAL_USE_VCLPLUGIN=qt6`: issue reproducible. * `SAL_USE_VCLPLUGIN=gtk3`: the issue is greatly reduced and LibreOffice becomes usable across both monitors. ### Additional environment checks Session information: ``` loginctl show-session $XDG_SESSION_ID -p Type -p Desktop Desktop=KDE Type=wayland ``` Qt scaling environment variables: ``` echo $WAYLAND_DISPLAY echo $QT_SCALE_FACTOR echo $QT_AUTO_SCREEN_SCALE_FACTOR echo $QT_SCREEN_SCALE_FACTORS ``` No output was returned for these variables, indicating that no custom Qt scaling overrides are configured. This behaviour appears specific to the KF6/Qt6 Wayland VCL backend. The GTK3 backend behaves significantly better with the same hardware and KDE configuration. -- You are receiving this mail because: You are the assignee for the bug.
