The Source field in the mapping dialog for an editable in a Display Page Template shows "unknown-variation(0)" instead of the item type

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.4 CE GA5, 7.3.5 CE GA6, 7.3.10 DXP GA1, Master
• Component/s: Page Templates > Display Page Templates
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/92469

Steps to reproduce

1. Create a display page template for an item type that doesn't have form variations (see note below)
2. Add a fragment with an editable field (for example Heading)
3. Click on the fragment and click again to focus the editable field.
4. In the side panel go to the mapping tab. 

Expected

The Source field shows a default value of "unknown-variation(0)"

Actual

The Source field shows a default value with a human-friendly name of the item type.

Note

This issue can currently only be reproduced by developing support for a custom item type. I found it while developing an example.

While this could also happen to Blogs Entry, it doesn't because as of today it still has an InfoDisplayContributor implementation active which makes the code avoid the problem.