Minecraft: 1.16.5
Forge: 1.16.5-36.0.15
JEI: 1.16.4-7.6.1.70

When i click "plus" on a recipe to add items on crafting table nothing is happening.

Thanks for the report!
I need some more information to solve this issue, please paste your full fml-client-latest.log or latest.log to https://gist.github.com and link it here.

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I have the same issiue. Did u fix it yours ?