Absolutely sure mine is a Samsung panel, assuming the OP is correct. The hex code matches what the OP says should be Samsung.

Check your screen for dead or stuck pixels. I just found a green stuck pixel in the top left of my display. Gonna see if I can get it replaced :(

I have a 1TB Standard Edition OLED. Samsung panel (code 03), and I have a green stuck pixel in the top left corner of the screen as well as a line of brighter pixels on the right side of my panel. Talking to support to see if I can get the unit swapped or the panel replaced.

I think I had the same issue as you, except I only installed Firefox in desktop mode and was returning to gaming mode when it happened, so I don’t believe it had anything to do with your startup movie. Here’s what my display looked like: https://imgur.com/a/1rH3m5g

I immediately submitted a ticket to support explaining what happened, just in case this was something serious that could damage my display if it occurred again, but they only told me to watch out for it happening again and to update the ticket if it did. No idea what caused it, because something as innocuous as installing Firefox shouldn’t do something like that.

I had to fully shut down the deck by holding the power button until it powered off, then turn it back on, to restore functionality. Seems to be okay after… I hope.