In the FTB Inf. Evolved pack (latest available version) I build a house with Carpenter's Collapsibel Block ("filled" with birch wood planks) and they are randomly disappearing even while the affected chunks are chunkloaded (or not).

There is no crash, there is no error logged, also the affected chunks are not broken in any way and on top of it only those blocks are disappearing.

I am not sure why but this should be looked over and maybe tried to be fixed because it is rly annoying because even after replacing them, they are a few days later gone, randomly.

https://puu.sh/zJMTt.jpg

When the blocks disappear, do they still have collision properties or are they missing entirely?

Some possibilities:

• Block tile entity loading failed (this would show in logs)
• Blocks dropped due to a neighboring event

One way to help identify issues with tile entities is to put some vanilla signs with text around the problem area and see if the text disappears when the blocks from the mod disappear.

Without any log output indicating a tile entity failed to load, or some other event.. the only other possibility I can think of is that the block was removed by some other event in-game. Worst case scenario if the mod fails to load data, the covers, overlays, colors, etc, just reset. If Forge fails to load the block usually disappears.

They are compleatly vanished without any log entry. MobGrifingRule is set to false so I can definitly say that smth. must be going wrong with it.

I could place a few blocks of them with a sign on it to see what will happen but the main building containting those blocks is gone, since I moved with my staff in another area.