I've found that if you go to a high place, the sky features (excluding clouds) appear just past render distance. I do not know if this is a bug, or a consequence of the new feature being implemented without a solution to the problem.
MCPE-4880
Sun, Moon & Stars Appear Just Past Render Distance
Resolved
Duplicate
0
As far i know, when you are on a high place it happens that too on Minecraft PC, that is how it works