Bug: Move to reading pane scrolls the email pane

Anyone else have this bug?

  1. scroll to a message you want in the main pane
  2. move to the reading pane on right (in my case)
  3. !! the main pane scrolls, losing where you were, so you need to scroll back and find where you were again !!
    No other actions were made, e.g. moving the mouse up or down or using the scroll wheel
    I have a video but can’t seem to upload it here