Sometimes (I could not find a reason for this) the resizing of the split view in history view is not working anymore (size adjustment of tree part and commit info part). Resizing the Sorucetree window unfreezes this for some time.

It seems there is sometimes a minimum height for the lower section. When you drag the splitter below it, it directly jumps back to previous version. So I assume that sometimes the calculation of the minimum height of the lower section goes wrong.

When moving Sourcetree to another screen there is no such  minimum height for some time and the splitter can be dragged fully to the top (having no tree view) and fully to the bottom (having no commit info view, sometimes when selecting a commit, sometimes after some time or reload of the view (F5)). Unfortunately suddenly the minimum height for lower section appears again (I could not find any rule). So maybe related to screen resolution or scaling?

Screen where it freezes immediately: 1920x1080 with 125% scaling

Screen without freezes after some time: 3840x2160 with 175% scaling