I tried the right click on start to get the dialogue box which did show up. I switched from Auto detect to Desktop OpenGL and to Software, on two different versions of R (3.5.3 and 3.5.1) and neither did anything different.
I did have a rendering issue before which was in a previous post of mine but I was able to fix that. Trying this time didn't help.
I just found this thread which describes my problem exactly. It appears to be unanswered.