We have a small but significant number of contacts with trailing spaces at the end of name fields (both first and last) as well as address fields (have found city name and postal code thus far). This has been going on for at least a year at a low rate, but perhaps picked up recently and is affecting more than 1% of new contacts. It has happened via webforms, via profiles used as snippets and profiles in event registrations and different instances of each, so it doesn't seem to be coming from any particular place.
Has anyone else seen anything like this? I can't get a search that works to find these, but they are pretty easy to see by scanning new contacts and looking for spaces before the comma that separates last from first names.
Update: In the last ten days, we've had a big increase in these spaces appearing. 12% of 375 recent new contacts had this issue in their last name (and some of those had it in other fields as well). This is much more than we've seen in the past, which suggests it is not actually people doing it themselves (unlikely that there is a sudden explosion in space bar use at the end of fields)