In one-to-one mode, the chunk mode does not properly sync with what's in focus in the main screen

[kayaulai]

1. Create a bunch of chunks
2. Go to one-to-one mode
3. Click on a chunk
4. Instead of jumping to the line containing the current chunk, the chunk pane will flash for a split second in the right place, but then return to the original place.
5. You can bypass this if you go to one-to-many mode temporarily, and then return to one-to-one mode.