The latest update probably broke the mod. The interface does not respond adequately to adding new recipes.

I just tested it and it seems to work fine for me, without any other mods enabled.
There was something added recently that allows mods to respond to mouse clicks when they're done on GUIs, so it's probably another mod consuming the input and doing something else with it.
I wouldn't be able to tell which mod was causing the issue, hopefully this gets fixed soon.

either reinstalling or resetting the settings helped to solve the problem