I overloaded a catchblock. It broke. The center dowel came out. I picked up the broken catchblock, then tried to toss it away. Instead of asking if I really wanted to toss the item, it pooped out a round timber, 2 units long. The broken catchblock was still in my hand. I clicked again to throw it away. Another dowel. I clicked as fast as I could and pooped out a pile of dowels, and the broken catchblock was still in my hand.
Not an important bug, but if you want free, useless dowels, this is how you get 'em.