As we can read now in the description of the bug note following releases are affected.Known Affected Releases:3.7(1), 3.8, 3.8(1), 3.9Solutions...Known Fixed Releases:3.10(0.84), 3.9(1)
Maybe - an interesting hint...If you zoom in - too much - the map is blended out ...It is possible that my previously described problem was simply a "zooming" problem!??! Have a great day!
I apologize, the problem was sitting in front of the keyboard.... I remembered the post from "marce1000":- To avoid browser-effects (caching, ....) , verify the issue with another browser(s). Clear browser cache, one more time.And I am happy again.....
PI 3.8.1 Update 01 fixes this Bug "CSCvw84325 - Prime Infrastructure may not render the background street maps in selected screens"....according to release notesBUT IT DOES NOT FIX THE PROBLEM...for my installation??!!??