I have yet another Back to the Future change

In part 2 the black screen that originally accompanied the scene when Marty got knocked out, on all post-2010 home video releases (which sadly means the 4K release too) it was shortened, it originally played for a good 5 seconds and the tail end of the music that plays during the next scene has been chopped off too as a direct result
https://m.youtube.com/watch?v=RyJSwxqiJvw

This is so bizarre considering it was intact on the 2001 DVD

Also on the 2010 blu-ray of the first, the credits were squished by 25% due to a mastering error, this was not an issue on the earlier DVD releases and fortunately was fixed on the 4K master and subsequent blu-ray