So clearing "dirt" from any region, will act like a "fill" creative tool instead on other player's screens
It fixes with a client-side relog.
#Clearing Selected Blocks
mighty ravine
harsh void
So from what it seems is when the host executes creative clear while selecting a specific block it acts as a creative fill on the client side for the block selected to target and clear.
This don't affect the host as it wont find any of the block type to clear.
I.e clear a certain type of block with markers that isn't in the marker region. It will then fill the targeted block in region that it was targeting to clear on anyone but the host.
If you inspect the blocks that get filled when it should target to clear that type it shows up as it.
If you mine it its gonna drop the original block as it wasn't replaced host side.
relogging fixes it
If it does have one of the targeted blocks in the marker region on the other clients than host it wont clear the gold and still fills