I recently experienced an odd bug with the day light cycle. The sun is at its usual place during the noon, but the sky is dark as if it was night time. No mobs were spawning but the sky was still dark. This has been noticed on both my Realm and single player world. It doesn't affect gameplay much but it really is an odd bug. Clearing weather and changing time to day via commands has no effect on this. Logging out and logging back in also doesn't change anything

UPDATE: After having not gone back to the world for a whole day and logging back in the bugs gone and the sky's normal as usual. My other friends in the realm have also reported seeing this but not everyone sees it at once