#256 blocked aiming

[BloodyRain2k]

For some weird reason I sometimes get that dead aiming then looking at blocks in specific angles, the block type doesn't seem to matter as I had it on a simple sand block too.
I also tried it with the loaders and the rest just without BC 1.8.1.1 and it didn't seem reproduceable then. So it seems only to be present with BC 1.8.1.1.

I just looked a little bit up on the 2nd screen and my aimbox was gone. I was also unable to destroy the quarry while the aimbox was gone so who knows where it was, for sure not where it should be.