Alpha version also has this issue.
If i map 3 finger click to middle click app will crush after few seconds of start or first 3 finger click
but if i map 3 finger tap it works, thats how i'm getting along for now. Please fix this its very annoying.
Weird, that seems to work fine here.
Can you check whether there is a crash report in the macOS console app?
yes there is, let me know if i can help
BetterTouchTool_2020-03-30-165144_PX-LON-EN-VB.crash (97.5 KB)