XDJ RX2 bug: Jog wheel doesn't respond to touch (not stopping track)

The jog wheel stopped responding to touch on my XDJ RX2 (i.e. not stopping the track by a touch). Not sure but it might have started after an update form rekordbox.

Tried a firmware update, which worked initially but after a second restart of the rx2 the problem persisted. Anybody a solution???