Short summary: ODV workspace shrinks with each launch, makes it approximately half-size of previous run.
System info: ODV 5.8.1 on macOS Sequoia 15.3.2 (problem persisted on previous subversion of Sequoia) on MacBook Pro 14.1 with M1 Pro.
This is how ODV looks after a few launches after installing it:
Nothing seems to help but deleting the settings file located at /Users/my_name/.odv_settings_macx64, which still makes It look really small
I will be happy to provide all the additional info needed or run some tests to fix it
UPDATE
I watched .odv_settings_macx64 file changing from launch to launch.
This is how geometry section looks pre-launch:
[Geometry]
Canvas-Height = 440
Canvas-Width = 611
Window-Height = 540
Window-Left = 20
Window-Top = 38
Window-Width = 840
showMaximized = 0
This is how it looks after launching ODV:
[Geometry]
Canvas-Height = 220
Canvas-Width = 305
Window-Height = 540
Window-Left = 20
Window-Top = 38
Window-Width = 840
showMaximized = 0
I have no idea why it is happening, but it is definitely a bug.