The filter of pack.mcmeta does not work for namespaces that are not "minecraft"

The bug

The filter will not filter out the specified path in the namespaces that are not "minecraft"

The attachment is a datapack to verify this behavior. It contains a pack.mcmeta that filters out recipes from any namespace and a custom namespace with a recipe and an advancement in it.

How to reproduce

1. Download the datapack attached and install it to a world
2. Enter the world
3. Place down a crafting table, go into its GUI and click open the knowledge book
4. The custom recipe that is supposed to be filtered out is shown