STEPS TO REPRODUCE 1. Have more than 1 monitor/screen. Tested on left monitor 90deg rotated, right monitor normal horizontal. 2. Enable "Remember window size" 3. Change window size 4. Close Konsole and restart OBSERVED RESULT Window size is always roughly 650x510 EXPECTED RESULT Window size should be as in #3 I get the impression this might be a KDE bug but entering it here for reference.
Could be a a duplicate of bug 401042.
A possibly relevant merge request was started @ https://invent.kde.org/frameworks/kconfig/-/merge_requests/101
According to my tests (two screens with different resolutions), this bug has been fixed.