As of yesterday the translation of properties to local language labels in the column headings seems to have stopped.
Steps to Reproduce:
See this diff:
Actual Results:
Headings just display property numbers, i.e. P followed by 18, 350 and so on, with Wikidata links.
Expected Results:
Headings translated to the local wiki language, "Bild", "RKD-Werkkennung" and so on, as it was before yesterday