Ullstein

I have not been able to find out under which circumstances an object suddenly gets a pattern of grey/white diagonal lines over it. It seems not to make any difference. The object still works but it looks different. Can anybody explain the meaning of this?

Bildschirmfoto 2019-07-29 um 10.05.08.png

I have not been able to find out under which circumstances an object suddenly gets a pattern of  grey/white diagonal lines over it. It seems not  to make any difference. The object still works but it looks different. Can anybody explain the meaning of this?
Many thanks

I have not been able to find out under which circumstances an object suddenly gets a pattern of  grey/white diagonal lines over it. It seems

objects-get-a-diagonal-striped-grey-white-pattern

https://cycling74.com/forums/strange-display-with-live-objects-gray-diagonal-lines

Objects get a diagonal striped grey /white pattern