Disabled Matrix blocks aren’t shown, then deleted

[brandonkelly]

Description

Super Table fields aren’t loading disabled Matrix blocks. Then when the entry is re-saved, they end up getting deleted.

Steps to reproduce

1. Create a Super Table field with a Matrix field inside it
2. Create an entry with the Super Table field
3. Add at least one Super Table block with a disabled Matrix block inside it
4. Save the entry. You will notice that the disabled block isn’t anywhere to be seen, however it’s still in the database at this point.
5. Save the entry again. Now the disabled Matrix block will get soft-deleted, because it’s missing from the POST data, so Matrix assumes it was intentionally deleted.

Additional info

• Plugin version: 2.2.1
• Craft version: 3.*