Icons on windows, search toolbar and icons of buttons maximize, minimize & close missing

Hello everyone!
After an update that I can’t remember (we have a lot of them), all of icons of windows, taskbar and the search of the system, is missing. Sometimes, a random refresh happens and all of them backs to the normal behavior.
Now the annoying behavior it’s happening, as you can see at the images!
Doesn’t appears any icon on tray icon too,