Unusual icon at startup

[SAVVYSCLUTTER]

After updating to One UI 6.0, my A23 5G shows a status bar icon for a few seconds once I enter my PIN at startup. I don't think it's a third-party app. What is it?

[samhodg86]

Could be the android 14 icon, like the picture below

[SAVVYSCLUTTER]

That's it - my image didn't upload earlier. Why does it appear?

[carguy143]

It does it when the phone is still opening things in the background after being turned on.