I hit the problem once, but it has not repeated.
I'm on a 4S ATT
10.0.15254.562
1052.16.09031.50700
If I wanted to get MS Attention to this thread and issue, then pick a day and time (Universal) and send the thread as a link in tweets to @Windows. To get attention to any issue, you need to take IRL tactics and apply to VR. 5 or 10 different people reporting within a few minutes will wake people up.