I tried to make items using the black kauri wood in conjunction with chisels and bits, but it appears this mod isn't fully compatible. The bits have no collision or hitbox and act like water when you walk through them. The pack I was using is ATM3 if that means anything.

That... what. I don't even comprehend how that could be possible.

@AlgorithmX2 any idea why something would act like this? There's not even any references to water in the block's class, so I don't have any clue how this could be happening.

I don't know, tried it myself and neither the log, or the planks is behaving for me in this way chiseled or not chiseled.

It must be some other mod conflicting some how. C&B enables fluid physics only when a FluidRegistry.getRegisteredFluids() returns that block. it grabs all the validStates for the blocks and uses that list of states as a list of fluids.

Seems like another mod is somehow returning your block, and thus its states as a fluid.

Is there anything I can do to help narrow down the source of the issue then? I'm a software engineer by trade but I don't know much about minecraft mods behind the scenes. It seems odd because they otherwise interact fine and it's just the wood from the Plants mod. And in ATM3 there's a lot of mods to narrow down...

edit: additionally, optifine had nothing to do with it. I'll check server vs no server and try a fresh copy of atm3 and see if I can find anything related to my configuration.

I don't know... There's no way its from my end, so you would have to try removing things until it stopped acting like a fluid.

I see. Thank you for the help. I'll let you know if I find the culprit.

Doing a binary search though the mods usually helps ( remove half, load, test, remove half, load test... switching to adding half when it reproduces )

That said load time can be prohibitive, and its going to take a while regardless most likely.

Did a little bit of initial testing. Running 5.9.8d of ATM3. I tested all full blocks in the mod just to see which blocks exhibited this issue. While testing, I found for me that this did not occur in singleplayer, only when on a server.

All wood and wood planks would act like a chiselled liquid block if there was a piece of them missing as bits. Leaves and any crystal block were unable to be chiselled at all (expected, but figured I'd test). The titan block (grabbed in creative) was unable to be chiselled as well.

Just to test as well, I filled in the missing bits on a plants block with a different bit that was a material from plants. The block would still act like a liquid, but would also push you out of the blockspace as well. Didn't matter which direction or where the bits were placed in the block, you would get pushed out.

This should be fixed in the latest build of C&B 14.22