BetterSnapTool 1.9.12 on Tahoe 26.2 - unable to resize or snap windows

Bugs or Unexpected Behavior
1

Describe the bug
For a couple of weeks I have experienced the following behaviour on my Macbook running Tahoe 26.2: After using apps for a while and sending the laptop into sleep/wake and connecting to an external display, apps start to become unresponsive to any attempts of moving them on the screen or snapping them to the sides of a display.

Closing and restarting the app fixes the issue every time. I have not been able to establish whether this is a bug of the OS or BetterSnapTool - any advice here would be appreciated.

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):
MacBook Air, Tahoe 26.2, BST 1.9.12

Screenshots
I’ve made a short screen recording where you see me trying to drag the Calendar window across my screen, by grabbing it at the top toolbar - unsuccessfully. Shortcuts to snap it to the side of the screen also failed: Better Snap Tool Tahoe Bug | Loom

2

I have the exact same problem: Using paid version of BetterSnapTool 1.9.12, one external monitor (32”) while running on a MacBook M2 Pro with Mac Tahoe 26.3.1 (a).

When manually dragging the windows sometimes they become completely unresponsive to being moved, and when i try to resize them, they resize in place as if they were using a fixed display that is smaller than my display. The exact behavior as in the video from the person above.

I have to manually quit the affected app so the window starts working again. Is there any solution in plan? Thanks!