Screen Unresponsive S7 Edge

A

AC Question

Hello. Have anyone here with s7 edge experiencing unresponsive screen from opening the apps thru lockscreen? Because the problem happened to me sometimes but its kinda annoying. The situation happened normally when I want to read chat on Whatsapp, so I opened it by clicking the notification from lockscreen.My 'back','home' and 'recent app' buttons still usable.I cant type,open keyboard and some more. I can minimize Whatsapp but still my screen is unresponsive so I cannot do anything.I found temporary solution by lock and unlocking my screen back just to fix the problem.Maybe someone here can provide another permanent fix for this problem.Thanks