Steps to reproduce:
1. Create new Unity project
2. Import provided "MySimpleGraph" script
3. In the Project window, right-click -> Create -> Graph Toolkit Samples -> Simple Graph -> Open the Graph
4. In the Blackboard, click on “↓” button to open “Pick a type” dropdown
5. At the bottom right corner, click on resizing icon and make the window as big as possible
6. After making window as big as possible, try to resize it to a smaller size
7. Observe the window

Actual results: Unable to minimize “Pick a type” window after maximizing it’s size

Expected results: Able to minimize “Pick a type” window after maximizing it’s size

Reproducible with versions: 6000.4.0b7, 6000.5.0a6

Tested on (OS): Ubuntu 24.04 (reproducing), macOS Silicon Tahoe (M1) (not reproducing)