I've experienced game crash while using Little Chisel with Slice tool. The game crashes when I place one block slice through another block slice as shown on the image. (in Creative mode)
I've tried using different materials, as well. The game crashed in 9/10 cases.
Images right before crash:


Fortunately, the crash doesn't corrupt map file and when I connect back into the game, the block that caused the crash just isn't there as if I never placed it.
Crash report files:
crash-2018-03-06_19.05.36-client.txt
crash-2018-03-06_19.07.49-client.txt
crash-2018-03-06_19.12.57-client.txt
crash-2018-03-06_19.21.01-client.txt
I'd also want to say that I love your mod and I hope that most of the issues will be fixed soon.

Will be fixed in the next version. Thanks for reporting this issue. You made it really easy for me to find the case of it. Unfortunately I couldn't fix it earlier.

Fixed in pre85 available on my discord server (will upload it to curseforge tomorrow). Again thank you very much for your kind documentation!