What feature do you want to see added?

Enforce the max-blockstates limit for the //stack command. The problem with allowing the stack command at the moment is that people can stack millions of block entities such as hoppers for example which will cause a lot of lag.

Are there any alternatives?

The only alternative to this problem is to disable access to the //stack command

Anything else?

No response

This seems to work fine for me, attempting to place more than 2 chests/hoppers with max-blockstates set to 2 fails.

This seems to work fine for me, attempting to place more than 2 chests/hoppers with max-blockstates set to 2 fails.

I updated to the latest build and it's working for me too, I'll close the issue