When 'false' is in the config for allowvoidfloating, items you enchant can still get it. It also still shows up in loot tables iirc

Did you update your game from an older version while keeping the config file? Mojang changed how enchantments are handled starting with 1.21. Nowadays, enchantments are no longer registered with code but with JSON files. As a result, the config file no longer allows disabling the enchantment.

To disable it, you would need to manually remove the data/enderitemod/enchantment/void_floating.json file from the mod JAR using 7zip or use a mod such as Enchantment Disabler. If you try to change the config in-game using Mod Menu, it will indicate that you can no longer disable the enchantment just through the config file.

Hope this helps feel free to reopen if you get stuck.

This is on 1.20.1, I have it disabled and I still get axes and swords and such with the enchantment in the end city tables.