Show selected topics only in the Automated list filter

Problem/Motivation

When creating an Automated list, there is an option to only show content tagged with specific terms from the Topics vocab in the list. This works as expected. However, if I choose to expose the Topics filter on the Auto list, the filter exposes every term in the vocabulary, not only the terms I have selected.

Steps to reproduce

1. Create an Automated list
2. Open the Metadata panel and add the terms from the Topics taxonomy to limit the list to content only tagged with these terms
3. Open the Filters panel and check the Topics checkbox to expose the Topics as a filter (select only that checkbox or select another checkbox too)
4. Save the node

Observed

All the topics are exposed:

• If only the Topics checkbox was filled all the topics display in pills
• If a second checkbox was filled, then the filters display in dropdowns, and all the terms are available in the Topics dropdown

Expected

If I choose to only show content tagged with specific terms in the list, then the filter should only expose those terms, not the entire vocabulary.