Currently, every time you close and reopen the property binding editor, the transform editor always reverts back to its default size. Would be great if the transform editor either remembered the last size it was opened at or just filled in the empty space by default (if you had two transforms, then 50% of the empty space for each, etc - with a minimum size that eventually triggers the scrollbar to appear). Gets super tedious having to expand that editor every time, especially when fiddling with a transform that requires a lot of trial and error. Eventually I'll move the script to a library and call it from there so it wouldn't need the large editor screen, but I find it easier when doing quick concepts to have the script bundled with the object.
(Apologies if this is already a feature request. I didn't notice anything after a quick forum search.)
Current behavior when opening:
One possible desired behavior: