When item in Trash is permanently removed content status remains Trashed until server cache is cleared.

Steps:

1. Send content item to Trash.
2. Check content status using REST (/api/ezp/v2/content/objects/id). [Status is TRASHED - OK]
3. Remove item permanently.
4. Check content status using REST. [Status is still TRASHED - NOK]
5. Reload server cache.
6. Check content status using REST. [404 Not found - OK]