Description: Run Impress presentation with Presenter console. I have only one screen, so I set Slide show> Slide show settings>Presenter console>Windowed See window Presenter console, bottom part where is the timer. Every second this part of the UI flashing when time changes. Steps to Reproduce: 1.run presentation with windowed presenter console 2.watch the timer Actual Results: timer flashing Expected Results: no flashing Reproducible: Always User Profile Reset: No Additional Info: tested in current master too.
This seems to have begun at the below commit in bibisect repository/OS linux-64-25.8. Adding Cc: to Noel Grandin ; Could you possibly take a look at this one? Thanks 003fad297ebef395e545580a955ec1811d3ed683 is the first bad commit commit 003fad297ebef395e545580a955ec1811d3ed683 Author: Jenkins Build User <tdf@maggie.tdf> Date: Fri Nov 21 00:56:06 2025 +0100 source e0d4d178caff1414a9a21fa57f06bc8d4d2c389a 180184: Change alpha behavour of OutputDevice::SetFillColor | https://gerrit.libreoffice.org/c/core/+/180184 Linux with X server.
Repro on Linux with Wayland. No repro on Windows. Arch Linux 64-bit Version: 26.8.0.0.alpha0+ (X86_64) Build ID: d0265596672d78ad6f3980ff6fb900535aefd11f CPU threads: 8; OS: Linux 6.18; UI render: default; VCL: gtk3 Locale: fi-FI (fi_FI.UTF-8); UI: en-US Calc: CL threaded Built on 15 January 2026