In 1.17 stuff like repairing a bow says its too expensive even though it could be done in a 1.16. and added other stuff to one thing is more expensive then in 1.16 (like adding efficiency 5 to a tool costs 30 levels and about 10 levels in 1.16) Also you cant name something that is too expensive. 

To cause this bug first enchant a shovel (does not need to be a shovel) with Silk touch (does not need to be silk touch just any enchant) the enchant levels will be over priced and when you add something like efficiency 5 and Silk touch it will say "too expensive" you can't even name it or do anything else in the anvil.

Note: This has nothing to do will texture packs or resource packs, and no addons.

Also the tool in the screenshot aka the shovel was disenchanted. The penaltys probably stayed even though it was reset and used a different anvil.