Reproduction steps: 1. Visit https://bugs.webkit.org/attachment.cgi?id=183328&action=review 2. Comment anywhere "This is a test of spelll " 3. Safari scrolls up to the top underlining "s to" in "Select line numbers to add a comment."
<rdar://problem/13039755>
Huh, it seems like this problem has been fixed on the latest nightly builds.
This was fixed in http://trac.webkit.org/changeset/132923.
I meant http://trac.webkit.org/changeset/132924.