Whats happening ? 1 OLED Pitch Black, and the Other new OLED, is not - looks like a LED?

This is my 3rd attempt at posting here in the last 12 hours, can the mod please approve my post so I can get some help :( i've even removed the links if that makes it easy

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I been using a Sony A1E OLED for a while, and it's great. Just recently got a A80J, watched like 20 hours of content, the A80J honestly looks better to my eyes.

However, last night was watching a movie (only watched about an hour, mentioning this in case it was some temporary image retention?) and as the movie shifted from the last scene to a black near-credit scene, I was blasted with this blue screen during the transition, rather than a pitch black transition.

Was definitly not used to it so I made a point of rewatching this scene on the A1E, and on the A1E the transition is pitch black.

On the A1E, I am using "Cinema Pro" pre-set. On the A80J I am using "Cinema" Preset.

Both TV's "Brightness" is set to "MAX" if that helps.

imgur . com/a/QAAAo24 - THIS IS THE SCREENSHOT of the problem

ufile . io/fby4ft3x - this is the original 1080p mkv video, but I sliced the 10 second problem part (did not re-encode) - it's only 8MB, please try for yourself on your TVs

if people can have a look and let me know I'd truly appreciate it.