The Wither breaks blocks in foreign regions. To prevent it from breaking, I had to set up a gamerule, but I would like the wither to not be able to break other people’s regions, but the normal world to be able to do so.

There's no way that is true, the Wither can't break protected blocks, unless you turn off the protection for it.

Honestly. I have regions and blocks are broken in them

In your claim, are blocks configured to be protected "from mobs" and "from other" and "from explosions"?

In your claim, are blocks configured to be protected "from mobs" and "from other" and "from explosions"?

hm.i check.

In your claim, are blocks configured to be protected "from mobs" and "from other" and "from explosions"?

oh, off :D sorry