Theres a small bug with the GUI, from time to time, the GUI stops letting me interact with it, such as I can not configure ESD's and can not change pages in the storage crates. I am not sure of the cause, but once it happens you cannot interact with anything in the mod.

Ugh I know, and I don't know why it happens. I've never encountered it myself, but a couple of people have told me about it.
Can you send me the full log of an instance of where this happens?

Its caused by Bookshelf; please grab this and see if you can replicate the bugs. https://minecraft.curseforge.com/projects/bookshelf/files/2347107

In which way is it caused by bookshelf? O_o

Hmm let me see if I can find the log... one second.

https://gist.github.com/P3rf3ctXZer0/fdef046cd0151b5f1991a9209fbae11f

Huh, this is weird.
Could you report it to bookshelf then?

he already fixed it. Its from the version just before the most recent.

Well then I'll close this.