Something has changed on your computer since then. SketchUp 2019 has not changed in that time so what did? If it’s a bug, it’s with your graphics drivers. This sort of thing has been reported in the past and the graphics drivers have always been the culprit. You can try going into the OpenGL settings in SketchUp’s Preferences and changing the state of the Use Fast Feedback check box.
How did you check for graphics drivers? Did you go to the graphics card manufacturer’s site to get and install their latest drivers?