I shot a video about the problem but I don't know how to post it here However I was doing some search on the internet and I found that the problem can be solved by disabling the three finger screenshot gesture Go to Setting -> gestures and keys -> gesture motion -> system motion -> you need to disab...

Hello There is an essue with the multitouch in the touch screen It seems that it can't take more than two fingers, if I put the third finger the previous two finger disappear, first noticed it in a piano app then I have tested it with many touch screen test apps (multitouch tester, multitouch test, ...