Hi PightyMo,
Did you read through any of the information below, If so, did you try any of the steps below as well, as this would be my troubleshooting process.
Can you post a copy of your DxDiag? This was something I didn’t ask though, if willing I’d be curious with that one as well.
There may be a correlation here that I could have our Compatibility team look into. With the test maps and images provided I was not able to reproduce the error on my end.
provided a test project that this is happening with as well. I’ve got time to start looking into this one a little more this week, and since opening it I can see the test project it is not functioning properly. I have no idea why at the moment and will need to investigate further.
If you have any way of recreating the issue in a more consistent basis I’m definitely interested or even just clues to what happened right before it stopped working.
Right now, the work around seems to be to migrate content to a new project. Not the best solution at the moment though.