Zombified piglin spawning in a nether portal in the overworld affected by random tick speed

The bug

The spawn rate of zombified piglins in active nether portals increases when the random tick speed of the current world is set to a higher value.

How to reproduce

1. Build a nether portal
2. Set the random tick speed to a higher value (e. g. use /gamerule randomTickSpeed 10000)
3. Wait a bit and observe the portal