We have a Craftique Tall Armoire that has this cockbeading on all of the 6 drawers and, as you said, it is glued on to the drawers (a rabbet is made all around their drawer faces that is the thickness of the cockbeading and about half the depth or thickness of the drawer face). When the cockbeading is glued on, it protrudes in front of the drawer face and looks very nice. The corners are nicely mitered so it surrounds the drawer face. Why don't the miter joints crack or separate? I believe that the answer is simple -- the drawer and cockbead material is Mahogany, so the woods are not dissimilar. Second, the long pieces are long grain to long grain and so they expand or contract together. The side pieces are less than 8" long and expansion is so minimal that they don't move. We have 10 pieces of Craftique furniture (King-sized Rice Four Poster, Queen Anne Highboy, the armoire, two nightstands and a Martha Washington chest grace our Master Bedroom) and I must say they are the finest modern made furniture I have ever seen. If you ever get a chance, take a tour through their factory in Mebane to see how well they make it.