Grrrrr...so annoying! (I know...First World problem.)
Finally, I had a genius idea! Well, genius for me.
See? Now it stays wide open until I'm ready to close the door myself. YAY!
I'm not going to tell you how many years we've owned the machine before I had my "Eureka!" moment. Suffice it to say: "Even a broken clock is right twice a day."