I recently disabled Special:AbuseFilter/524 on enwiki. Around 20 minutes later I came back and saw:
On average, its run time is 1.07 ms, and it consumes 124,058 conditions of the condition limit.
(I have a screenshot if anyone would like it)
Ideally that value would stop getting updated as soon as the filter is disabled, or if not possible, it should just not be displayed if its going to be that wrong.