Can't afford the time to test properly but let me just ping you that when using:
reaper5981+dev0809_x64
SWS has problems detecting a track when the mouse is over TCP area.
This is the code SWS uses to deduct track pointer from track HWND:
https://github.com/reaper-oss/sws/bl....cpp#L389-L396
https://github.com/reaper-oss/sws/bl...pp#L3017-L3060