I just added user:Minorax on Incubator to two groups, both temporarily for one month.
The log doesn't record that it is temporary: https://incubator.wikimedia.org/wiki/Special:Log?type=rights&user=&page=User%3AMinorax&wpdate=&tagfilter=&subtype=
Special:Listusers and Special:Userrights do, however. https://incubator.wikimedia.org/wiki/Special:ListUsers/Minorax
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Description
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There are stored as infinity in the logging table and that is used for the text on Special:Log
The other special pages using the expiry on the current rows, but there are gone when it is expired why Special:Log stores its own data. It seems to miss the selection for the time.
{ "batchcomplete": "", "query": { "logevents": [ { "logid": 3085805, "ns": 2, "title": "User:Minorax", "pageid": 0, "logpage": 0, "params": { "oldgroups": [], "newgroups": [ "test-sysop", "translationadmin" ], "oldmetadata": [], "newmetadata": [ { "group": "test-sysop", "expiry": "infinity" }, { "group": "translationadmin", "expiry": "infinity" } ] }, "type": "rights", "action": "rights", "user": "MF-Warburg", "timestamp": "2020-06-10T13:10:59Z", "comment": "I:A" } ] } }
Comment Actions
Newer log entries are correct again. Seems like all the fixing happened in the duplicate at T255330.