Symptoms
The "Other" part of Sales report by Order Type is empty when logged in to PBA using locale other than English. In English it works correctly, the categories, adjustment documents, etc are there.
Cause
The issue has been identified as a bug with id #PBA-57372 ("The "Other" field for the Sales report works incorrectly under the non-English locale")
Resolution
Issue is fixed in the update 7. Update to that or later PBA version.