MOT Fail - Window Glass - Semi secure?

Hey guys

Back again with one that again is more to know from a point of intrigue.

My little sisters window has fallen into the door and I told her pull it up and secure it in place with some tape until I can sort it (she lives away). But I am intrigued to know would this be a fail, if the glass is secured with tape at the corners of the window, so not affecting visibility technically. As long as the window control switch is not touched, it does remain up.

(Yes I will be getting it sorted - just intrigued to know. )

Thanks.