Rust Block building inside foundation

Guys, i think you know big bug, when players can catch inside stone/metal/armor foundation and can put sleepbag or woodbox there.
I tried fix it myself, but my experience so little, and methods like in BuildBlocker or RockBlock don't want work with foundation entity.

What are you know about it? It can be fixed?

 

Try No Stash Bug it might work.

 

Thanks for answer, but this plugin isn't helping.