After I tried searching for a special item by double-clicking the checkbox at the bottom and switching back to normal (double-clicking it again), my NEI is messed up. I can't search for items anymore and I have to restart the whole client to fix that error... I'm not the only one with this problem, clam255 and theunknownxy who are my base-mates have got the same problem... Any ideas how to permafix this bug?
If you click in the area where the items are in a certain area which I will detail later with a screenshot it avoids having to restart the client. (I found it by accident)
