Sortable Column Headers Missing in Contacts Category View

birdwaves

I’m running Joomla 5.4.3 with the JA Purity IV template.

I have a menu item set to:

Contacts → List Contacts in a Category
Category: Spring Crafter List
Template Style: Spring Template Style (JA Purity IV)

Previously, this page rendered in a table layout, showing:
• Column headers
• Clickable sorting by Name
• Clickable sorting by Position
• Filter dropdown

My right sidebar module still references this behavior (“You can select ‘Name’ or ‘Position’ at the top of the columns to sort…”).

You can see it here: https://deerfield-craft.org/index.php/spring-crafter-list

Now the same page renders as a stacked list/card layout instead of a table:
• No column headers
• No clickable sorting
• Vertical contact output

In Components → Contacts → Options → List Layouts:
• Table Headings = Show
• Display Select = Show
• Position = Show

So component settings appear correct.

This makes me suspect that JA Purity IV is overriding the com_contact category layout, possibly via:

templates/ja_purity_iv/html/com_contact/category/

My questions:
1. Does JA Purity IV override the default com_contact category layout?
2. How can I restore the core Joomla table layout (with sortable headers)?
3. Is there a JA template setting controlling whether com_contact renders as list vs table?
4. What is the recommended way to disable or adjust this override safely?

Any guidance on restoring the default sortable table behavior would be appreciated. thanks.