Layers don't update

After upgrading to Mac High Sierra, layers don't update in Photoshop (latest version 19.1.1).

Changing text, colors, drawing shapes, or even basic functions like turning layers on/off don't show up on screen without some external action such as Zooming in/out.

A number of other people are having similar problems as noted here: https://forums.adobe.com/thread/2453008

Please fix!