1.16.1
8.0.0alpha3 beta 1 also, but maybe the item in my inventory is corrupt.
Forge 32.0.108

java.lang.IllegalStateException: No pattern here!

To Reproduce
I created a pattern for quartz glass(certus dust version). The pattern terminal was left in machine mode and the second my mouse touches the pattern in my inventory, I crash to desktop. I have re-created the pattern in regular crafting mode and it works. I don't really want to try it again because I can't seem to remove it from my inventory no matter what I try.
Tested with and without extended tooltips.

Update: Now it crashes just by opening my inventory. I was able to finally get it out by swapping with another item and tossing it into the world. I tested the original cause again in beta1 and it still happens.

Crashlog: https://pastebin.com/kTXjUan1

im having the same issues

I finallly managed to reproduce this. For me this only occurs when clearing the output of the processing pattern and there's an otherwise encoded pattern in the slot. I'll check this.