Captain Sim wrote on Jun 17^th, 2019 at 2:08pm:

speedbird001 wrote on Jun 16th, 2019 at 1:25pm: how can i get rid of an image on my PFD display has has an embedded colour image of CSB408 with in? Try to turn off the radar TEST mode.

When I saw the original post yesterday, I thought it was because the WXR was in TEST mode, but when I put it in TEST mode, I get the test patern, but not the CSB408 writing displayed on it.
I know I have seen the writing on the WXR before, but I can't remember when/how that happened (nor in which flight sim I saw it). :(