Hello,
That’s annoying when you delete one or more videos in gallery, the focus go back to the first video entry in gallery.
It would be more confortable to let the SelectedItem be the one next to the one deleted (or last one in case of multi-select).
I also noticed that the “del” key is no more active and you must click on the delete icon, that is not confortable too. DOing actions with Keyboard is often way faster than mouse 
regards.