Animation Property List has no limit as to how wide it can be expanded when expanding onto the Animation Timeline

Steps to reproduce:

1. Open any Project
2. Create and Open an Animation Clip in the Project Browser (Right Click > Animation > Animation Clip)
3. In the Animation Window expand the Property List that's on the left side via click and drag of it's right edge 

Actual results: Property List can be expanded up to the right edge of the Animation Window, it "bounces" off the right Edge of the Window, the horizontal scrollbar becomes inverted expanded near the Edge

Expected results: Property list has a limit as to how wide it can be

Reproducible with versions: 6000.5.0a7

Not reproducible with versions: 6000.0.68f1, 6000.3.9f1, 6000.4.0b9, 6000.5.0a6

Tested on (OS): Windows 11