Description:
Clicking the 'Discard changes' button in the table editor does not refresh the view of the properties when editing table columns. This is very confusing, as the supposedly discarded column remains in the column list, while it does not appear in the table view in the diagram, nor in the table editor if you open a new one, or close and re-open. It also permits the 'ghost' column to be edited, but clicking 'Apply changes' appears to have no effect.
How to repeat:
1. Add a column by typing in a column name only
2. Click 'Discard changes'
3. The column appears to still be there, and is editable, with 'Apply changes' active
Suggested fix:
Clicking 'Discard changes' should remove the column if 'Apply changes' has not been clicked before further editing, and the view should certainly update.