Screen 2 & 3 = 1920 x 1200
Same behaviour with a normal wired USB mouse (not working properly)
Resolution range is both supported and selected within the OS normal settings function.
Starting the editor on the MacBook window works ok.
Use the mouse to drag the window up and onto monitor 2.
No longer works to move/drag objects and keeps jumping to lower left
Drag window back to monitor 1
All works fine again.
(Tried & replicated with USB Mouse & Magic Mouse)
Monitor Arrangement is:
2 3
1