There seems to be a problem with the landmarks. You can't dismantle them unless you remove the block under them.

@Dav92 It's a bug. They are just like Redstone torches and I can't break them with anything

Is that really a bug? In the past they were punchable. Only with one of the last updates I need a pickaxe to break them.

this is odd, sounds like the block resistance, material and hardness have been altered

Looks like commit daff831 caused this. BlockBuildCraft has a hardness of 5

oh, that's my bad, to have the markers send the block events i made i changed the it but didn't realize that they would then get those block properties, but as eureka is now using a forge event for that this change can just be reverted to fix this