One of our session host servers (2012 R2 with Desktop Experience installed) has recently been changing themes to a custom one instead of the Windows default. The issue is this custom theme contains some high contrast settings that paradoxically make things more difficult to read and some text to not appear at all unless selected. In some cases the anomalies show up even then the "Windows basic" theme is selected.
The only "fix" we have seen is to delete the user's profile, but the problem will re-occur eventually.
We could disable the Themes service but I would rather know what the cause of this is. Has anyone seen something similar or know where to look? Here is what we are seeing:
Cheers,
Bryan