Recently we've noticed a severe drop in the mobs that are spawning across our server, I personally frequently see it at 4-5 entites around, when I know that there are dark caves within range that should have spawned monsters. The highest I've seen it since the update was at 20, which was while I was lighting up caves.
Another player reports that he frequently sees entity counts of 1, even while standing at a previously functional mob farm, which has not been modified.
EDIT: This is linked to a change in view distance setting by the server, which means this bug is a duplicate of this
https://mojang.atlassian.net/browse/MC-2536
Apologies minecraft team.
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Duplicate of MC-2536.
apologies, this is actually linked to this problem. https://mojang.atlassian.net/browse/MC-2536
Found out after talking to our server host that he changed view distance, right when we started having this problem.