If a user belongs to two user groups, its number of edits will double in Special:ActiveUsers when both of its user groups are searched.
Steps to replicate the issue & What happens:
- Go to Special:ActiveUsers.
- Tick "Bureaucrats" in "Display users belonging to groups:"
- You will find that a user "28bytes" has 83 actions.
- However, when you tick both "Bureaucrats" and "Administrators":
- You will find that he has 166 actions instead, which doubles.
What should have happened instead?:
- The action count should not be duplicated.
Software version:
- MediaWiki: 1.42.0-wmf.10 ( 3e07889 )
Other information: