Ensure entity views argument definitions include the entity_type property.

Provided an initial patch incorporating the necessary changes.

A separate update hook might be necessary for this to work, or have this patch applied alongside your update to 10.3.

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

Updated the issue fork so that vocabulary_vid arguments (Taxonomy term: Vocabulary) can be used to override the page title using {{ arguments.vid }}, since it was previously querying the taxonomy_term entity type.

Know seems small but since marked major probably should have test coverage

Thanks.