SourceTree auto-arranges it's Windows seemingly ad-hoc

After starting SourceTree for Windows, I usually rearrange the width/height of the various Windows parts so I can actually see the information I want (FileName, Path, list of local changed files, etc).

Sooner rather than later, SourceTree keeps automagically changing those back to what SourceTree thinks is a reasonable default.

I don't mind having a command resets the Windows to that reasonable default, but SourceTree should not do that automagically.