Last modified: 2013-02-22 11:35:35 UTC
On http://meta.wikimedia.org/wiki/Special:AbuseFilter/examine/1695918 or something, you have a spinner for while testing the syntax, but not while testing the edit (which seems to take longer). Please add a spinner for feedback while this takes place.
The spinner is there; it probably has been added there quite some time ago, probably in r95572.