Hi,
with the left click with a stone in the hand appeared all stones in the area + eventual conflict stones, not it doesn't appear too, how can I reactivate it?
(because some players can't place the blocks but I don't find the conflicting block)
Regards.

Scoping, which was where you clicked with a block to see where it would overlap with another field has been removed permanently. It got removing with the other overlapping stuff, it used recursion and it slowed down servers. It wont be coming back.