Game starts in windowed mode, suspicions of false full screen activation

Product: Battlefield 2042
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number RTX 4070 Ti
Enter RAM memory size in GB 32
Are you using any software with an overlay? Yes
If yes, can you list them here? MSI Afterburner
If you disable this software, does that have any effect? No
Which part of the game is the issue happening in? Game Menu
In which game menu were you when the bug occurred? Display
Please select your region North America
On which server did this happen? All
When did this happen? (dd.mm.yy hh:mm) 03.02.2023 12:00 PM
Summarize your bug The game starts in windowed mode and when you activate fullscreen after the fix (enabling borderless), it seems suspicious as to whether it's actually happening.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? I don't know.
What happens when the bug occurs? The game starts in windowed mode.
What should be happening instead? Fullscreen mode on launch

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When you start the game, it starts out in windowed mode.

To fix it, you have to enable borderless mode and then select fullscreen mode.

I am suspicious that fullscreen mode isn't actually enabled, as when it's in windowed mode and you select and activate fullscreen, it does not work and retains windowed mode.

It's probably still in borderless when you fix the windowed mode.