Mods:

• emi-1.1.20+1.20.4+neoforge.jar
• appliedenergistics2-neoforge-17.13.0-beta.jar

Issue: when trying to open special AE2 guide book by hovering item and pressing keybind ('G' by default) proggress bar appears, but constantly restarts after reaching ~30%, so I'm unable to open that special AE2 guide book.
Keybind rebinding did not helped.

I know that TheCreate has same guide feature as AE2, so there could be same problem, although I did not checked that.

AE2 needs to fix this themselves, but I believe they have, make sure you're updated.