Title says it all. GetItemStack() causes ArrayIndexOutOfBoundsException, very similar to #183.

Crash log: https://gist.github.com/LiskoSlayer63/3c24e77ad8958f921d416fd7ad9850b9

Forge version: 14.23.5.2847
Immersive Technology: 1.8.85

Try it without optifine.

I'll try that tomorrow. Also I need to note that I couldn't reproduce it after that one crash. It happened when I was hugging the tower very closely (I was building a platform around it). After that LoginShield also spawned me inside the tower, but I think that's nothing you can do about.

Closing this issue. If it's still an issue, feel free to re-open.