SUMMARY This bug occurs in a recent nightly build, but not in 5.3 beta 1, suggesting this is a regression caused by a recent patch. Note: this bug was found using two different Android phones, not a tablet. So try installing the APK on Android phone to reproduce the issue. STEPS TO REPRODUCE 1. Turn your phone to landscape mode. 2. Open a .kra file OBSERVED RESULT Half the screen turns black, with the UI squished into the other half of the screen. EXPECTED RESULT The whole screen has the UI, like in 5.3 beta 1. SOFTWARE/OS VERSIONS Krita 5.4 nightly Android 16 arm64 git 027815a6 (Feb. 14, 2026) ADDITIONAL INFORMATION This bug can be disappeared if you change the screen orientation once again after opening the first .kra, although it will return if you open another .kra file.
I can reproduce this when starting Krita in portrait mode and then rotating it to landscape. This is due to the hack that calls setFixedSize on start, which is fixable by calling that when the screen rotates. However, that brings back the problem where the screen doesn't repaint after opening a document. So I guess we have to go back to the solution that flickers the window.
A possibly relevant merge request was started @ https://invent.kde.org/graphics/krita/-/merge_requests/2653
Git commit fdb6fca1624f24a0cd509c7e557e04bfb9024486 by Dmitry Kazakov, on behalf of Carsten Hartenfels. Committed on 18/02/2026 at 10:40. Pushed by dkazakov into branch 'krita/6.0'. [android] Go back to flickering main window When opening a document, since the solution of resizing it causes problems on some devices and fixing those problems brings back the problem of the screen not repainting. Hiding and showing the window causes some flickering and has to be excluded on Xiaomi devices because they misbehave and add bars around the application, but it actually solves the problem. M +18 -11 libs/ui/KisMainWindow.cpp https://invent.kde.org/graphics/krita/-/commit/fdb6fca1624f24a0cd509c7e557e04bfb9024486
Git commit d52d3cf0d2b4a7a911c3a8f08396ed0a06dd495f by Dmitry Kazakov, on behalf of Carsten Hartenfels. Committed on 18/02/2026 at 11:00. Pushed by dkazakov into branch 'release/6.0.0'. [android] Go back to flickering main window When opening a document, since the solution of resizing it causes problems on some devices and fixing those problems brings back the problem of the screen not repainting. Hiding and showing the window causes some flickering and has to be excluded on Xiaomi devices because they misbehave and add bars around the application, but it actually solves the problem. M +18 -11 libs/ui/KisMainWindow.cpp https://invent.kde.org/graphics/krita/-/commit/d52d3cf0d2b4a7a911c3a8f08396ed0a06dd495f