Single click 'sticks' and causes a double action or drag to initiate.

When using BTT to activate a 'middle click' on the Magic Mouse 2 a single click of the left button seems to stick. When selecting items in my CAD software it causes the item to be selected and moved and also causes the cursor to jam in magic wand fill mode.

This affects the Magic Mouse 2. It doesn't seem to affect the Trackpad.

MacBook Pro 15" 2017
macOS 10.15 (Catalina)
BTT 3.206 (1382)

If I disable BTT everything seems to work but then I don't get the middle button pan feature in the app.