Modpack version
1.80

Issue
Me interface when changed shape to flat one and renamed wont let me change shape to square one. (Didn't tried naming square one and changing to flat me interface). Ask if need more information.

Hm, we'll have a look :) thanks!

Thanks! I'm fairly certain I can fix that.

One more thing you cant use renamed interface in other recipes idk if thats helps.

I checked some things and made a small video didnt know where to upload so did on youtube https://youtu.be/g-DuaLPqxw0

YouTube

Bug

I think this is a limitation of most items to be honest.

Of course it should be fixed, but I don't think this bug is serious.
You can revert the name by placing the renamed item in Anvil, leaving the name field blank and paying 1Lv. In that state, you can successfully revert to a box shape.

This would take too much time to fix considering the limited pay-off, sorry :)