One Legged Bar Bird

I can confirm. Brown lasers.

It is confirmed that this can easily be reproduced. We do not require more tests for such. We're looking into issues as quickly as we can figure some of them...

This is a very well known issue which also relates to water. Very commonly this happens on custom MCPC maps in Genisys. Is this map generated by Genisys or imported...

Okay, I would recommend taking a peek at still water in that case.

Are you sure this isn't related?  Neither Lava, nor Water (Likely of the "Still" variety) seem to receive tick updates to flow.

It's in Lava.php But not StillLava.php

Actually you may be right @dog194. Looking at it further, I may have been misinterpreting. _Seems silly that something so vanilla was left out though..._