What exactly was changed in the first scene???
Don’t know necessarily the first scene
I do know at the end when the Warden shoots himself the wound was digitally shifted to fix a continuity error
I think there was another change as well when that one guy is shot by the sniper, it was changed to four shots instead of two supposedly, though without getting a VHS version I can’t really confirm anything. Based on the way it’s edited it’s possible it was always 4 shots in the US release but cut in the UK to two