When configuring a metadata display profile, and trying to reorder the Display Fields:
Clicking "show row weights" reveals a new column, but there is no content in that column. Expected behaviour is a set of dropdowns with weight options (from -50 to +50), but in the Metadata Display screen these are missing. See screenshot.
This is particularly important in the current release, as the current Drupal version breaks drag-and-drop reordering. Effectively, display field just cannot be reordered.