Steps to repro using x11: 1) Open a file having an outline structure 2) Open Navigator either floating F5 or Sidebar version or both result: sporatic flashing occurs in Navigator content view. Version: 7.1.0.0.alpha0+ Build ID: 6f7f5f280abaf4ee84472359acd4952b2eea40a4 CPU threads: 4; OS: Linux 5.4; UI render: default; VCL: x11 Locale: en-US (en_US.UTF-8); UI: en-US Calc: threaded Fix for bug 131581 seems to be cause of this.
Here is effort to stop this: https://gerrit.libreoffice.org/c/core/+/104099
Flicker does not happen using UI render: Skia/Raster with VCL: x11 only with UI render: default.
Caolán McNamara committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/0f2bddacae89a50c1349e2511c3b60c7c7120aad tdf#136962 only do implicit SetUpdateMode optimization if the widget is hidden It will be available in 7.1.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
@Caolán, I confirm that flicker no longer occurs with the patch applied. Thank you.
(In reply to Jim Raykowski from comment #4) > @Caolán, I confirm that flicker no longer occurs with the patch applied. > > Thank you. Setting to VERIFIED
Caolán McNamara committed a patch related to this issue. It has been pushed to "libreoffice-7-0": https://git.libreoffice.org/core/commit/14f7f17d63cc15896b3b502a349640c15c90d08f tdf#136962 only do implicit SetUpdateMode optimization if the widget is hidden It will be available in 7.0.4. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.