My source is that I play the game since 2014 and it has always worked like that. Invisible tanks only exist since they implemented the LoS requirement as a measure against wall hacks.
The game works the same in custom matches as it does in randoms. There is no valid “controlled environment” argument here.
Besides, quoting a wiki that everyone can edit as your main argument is just bad.
It is true. You can see tanks standing over 5km away. Which your quote is explicitly denying.
You’re mistaking markers for being able to see the vehicles with your own eyes on the screen, which is only limited by your resolution…
Which quote denys this at this range? The Wiki article doesn’t, and nothing I’ve said does.
Markers are affected by the Pilot crew skill version of Keen Vision, which is different to the tanker version of keen vision. But you have contradicted yourself here, because you have just said that vehicles do not render based on screen resolution, which applies to ground RB just the same.