/datapack disable doesn't work

Trying to disable any datapack using /datapack disable fails with the error message Pack 'file/...' cannot be disabled, since it is part of an enabled flag!, even when that is not the case.

How to reproduce:
I've attached an empty datapack to simplify the testing.

1. Add the attached empty datapack to a world, or create a new world with the datapack (or use any other datapack)

2. If needed, enable the datapack with /datapack enable "file/empty_datapack.zip"

3. run /datapack disable "file/empty_datapack.zip"

4. ❌ See the error message Pack 'file/empty_datapack.zip' cannot be disabled, since it is part of an enabled flag!

Expected result:

You can disable a datapack that is not required to enable a feature flag.