While trying to diagnose lag and deadlocking in a pack I'm building, I've noticed this:

107 Penguins.

Please specify version and biome it occurred in.

Fuck, I actually forgot the biome, since I deleted the world, but it was on Forge 1.11.2, using build 2315 of Forge, and 0.5.2 of waddles for 1.11.2. It was one of BoP's cold biomes IIRC, though.

Thanks for the report!
That it is a cold BoP biome is all I needed to know really. Because it could actually be caused by them.
But I'm currently on holiday until the middle of next week, so I most likely won't be able to take a look at this, until then.

I have fixed this locally. A new version will be out for all versions later, when the new Forge recommended build hits for 1.12 (Should be sometime in the evening PDT)