I was doing some checking on activity using the API at a WMF wiki, and
found that the wiki was reporting that in some cases that the recentedit
count was reporting higher than editcount, and in some cases significantly
eg. <u userid="3235" name="[redacted]" editcount="1" recenteditcount="121"
I checked logs for administrative rights, or patrolling, and they showed
Reported to Mediawiki-L and declared a bug