Comment 5 for bug 1382795

I dont think a new config option is justified for this use case, much better to simply have the dialog ignore keypresses for 200 milliseconds after it is shown. That should be enough to reduce the incidence of unintended Enter to almost zero.

Or even have it totally ignore Enter/spacebar all the time.

Of course, the proper (labor intensive) solution is to make a full fledged notification widget that will render notifications as translucent rectangles in the right column of the calibre main window, where they will be very noticeable, but wont get in the way of another task like editing metadata. That is a fair amount of work however.