FWIW, I have similar issues with the Jolla phone and a cheap Samsung charger. When the battery gets about 99% full, the swipe gestures become hit and miss. The cure is to unplug the charger. Never had any problems with that charger and any other device except Jolla although I have read somewhere that tiny ripples in the charging voltage can cause similar problems. I guess the battery filters the ripples but it filters it less and less as it gets full.