> items shifting ... before I click ... results in the wrong choice Or a window from a different app pops up (the app took a while to start), steals the Enter

> items shifting ... before I click ... results in the wrong choice Or a window from a different app pops up (the app took a while to start), steals the Enter key press, interprets Enter as "Yes do [something]", and then does it (but I didn't want that!). Why can't OS windows be click & mouse disabled for 2 seconds, after they open