{Binding ...}. I catch both the mouse click and the key press via Interaction.Triggers. Now, next to my canvas are a few buttons. They do not have any functionality yet, there is no command binding so far on those buttons. Now everything works fine, until I click one of those buttons. Let's say I draw a few polygons on my canvas, then I start drawing a new one (by clicking on the canvas). When I now click on one of those yet-functionless buttons and then want to hit enter to draw the polygon on the canvas, the key pressed is no longer recognized.