I've tried these filters against the Get-ITGluePasswords cmdlet and they are not filtering any results.

-filter_name
-filter_password_category_id
-filter_organization_id
-filter_id

e.g. this cmdlet should return nothing yet it returns a list of all passwords with any category ID:
(Get-ITGluePasswords -filter_password_category_id 123456789).data.attributes.'password-category-id'