Here is a list of the deprecated items (specific instances removed to keep the list manageable):
* Object class 'Alignment' from gtk+ 3.20 is deprecated * Object class 'Horizontal Box' from gtk+ 3.20 is deprecated * Object class 'Horizontal Panes' from gtk+ 3.20 is deprecated * Object class 'Image Menu Item' from gtk+ 3.20 is deprecated * Object class 'Table' from gtk+ 3.20 is deprecated * Object class 'Vertical Box' from gtk+ 3.20 is deprecated * Object class 'Vertical Panes' from gtk+ 3.20 is deprecated * Property 'Current Color' of object class 'Color Button' is deprecated * Property 'Horizontal alignment for child' of object class 'Button' is deprecated * Property 'Rules Hint' of object class 'Tree View' is deprecated * Property 'Stock ID' of object class 'Image' is deprecated * Property 'Use stock' of object class 'Button' is deprecated