Create a TableView with one column (by default Gorm creates one with 2 columns).
Select the column to highlight it.
Try to unselect. It doesn't work, neither clicking on it nor on empty space around.
Resizing is unavailable too. The corresponding cursor doesn' t appear over the column title border.
The only solution is to select the TableView and change its layout to 2 columns temporarily.
Steps to reproduce: