I've had a couple of clients report that, on rare occasions, they'll experience a "record jumping" bug: They'll be entering data and then all of a sudden they'll be put on the 1st record in the found set.
Has anyone else experienced this problem? I can't reproduce it. The only pattern I've been able to gather is that it happens while they're entering data into a portal.
In case it helps, all instances of the bug have happened on Windows. All are using FileMaker Pro 12v2.