Version: (make sure you are on the latest version before reporting):

• Minecraft: 1.21.1
• Forge: Neo 21.1.148
• Powah: 6.2.3

Issue description:

I got a heapdump from a player that was having some memory issues.

Steps to reproduce:

If you want his world, contact me.

Is this a crash?, please include it here: (Recommended to use Gist)

199 Client Level instances on his dump

184 on powah stuff

Example of one path to GC root:

Issue is prob here because CableTile also holds a level so you can't free the key of the WeakhashMap