in day, skeletons and zombies will randomly stop burning for a few seconds, even if there is no solid block above them. the max amount of seconds i've seen them not burn for is 5.
to reproduce:
1. spawn zombie or skeleton or both on a block they can stand on.
2. set time to day
3. make sure there is no solid block above them
4. you will see that every now and then the mobs will just stop burning
Comments 4
no. in his reprot mobs will not burn at all, in mine, mobs burning due to sunlight will raandomly stop burning, then begin burning again.
that's because the ticks the zombie/skeleton has been on fire has gone to 0, that makes the mob no longer burn
Does MC-486 describe your issue?