Window Move with modifier key not playing nice with Snap Areas

Describe the bug
Using Window Move with a modifier key causes Snap Areas to appear which is the expected behavior.

But sometimes the Snap Areas flicker and remain on screen after stopping Window Move by letting go of modifier key. Almost like they "hung". The Snap Areas continue to flicker on screen even when clicking on other windows.

This also happens when dragging a window with the mouse but less.

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):
Bluetooth mouse.

Device information:

  • Type of Mac: MacBook Pro (16-inch, 2019)
  • macOS version: Big Sur 11.6 (20G165)
  • BetterTouchTool version: 3.609 (1757)