https://bugzilla.wikimedia.org/show_bug.cgi?id=58549
Web browser: --- Bug ID: 58549 Summary: catall.py replaces categories instead of adding them Product: Pywikibot Version: core (2.0) Hardware: All OS: All Status: NEW Severity: normal Priority: Unprioritized Component: General Assignee: Pywikipedia-bugs@lists.wikimedia.org Reporter: valhallasw@arctus.nl Classification: Unclassified Mobile Platform: ---
Expected behavior: every entered category is added to the page.
Actual behavior: all existing categories are removed, and only the entered ones are placed.
Example: https://nl.wikipedia.org/w/index.php?title=NS_1200_(stoomlocomotief)&dif...
Note: this is the case for both core and compat.