Problem with Anvils for geyser users? Try CustomAnvilGUI!
This is how the gui looks when you click on the anvil
This is the full anvil after you place the pickaxe, the book and click on Submit button (Sunflower)
This is how looks the result of submit operation (Pickaxe)
This is how looks the result of submit operation (Experience)
This button execute a fix on a single item or all items in the player inventory
This is the screen for the rename only for gyser users