Steps to reproduce: 1. Open webkit.org 1. Type a class name string, e.g. `(".foo")` 2. Use ctrl+A to get to the beginning 3. Type "docu" and hit tab (twice?) to autocomplete "document" 4. Type ".querySele" and hit tab to auto complete `querySelector` autocompletes, but it consumes some characters existing on the right side of the completion suggestion.
<rdar://73987425>