For the record: I'm well aware of what's causing all this and also found ways around it, the reason I'm reporting is because I get the impression that this is still a glitch and unwanted behavior.
The setup
I have 2 sides: NL (Netherlands) and the US (guess); NL is friendly towards the US whereas said US is neutral towards NL. Nothing much got customized other than setting NL to "computer only" and increasing the US proficiency by one nudge.
As NL I placed a few structures: 2 one-piece airports ('general') each accompanied by a radar and SAM site. I looked up the last two in the database and made sure that these were officially part of the Dutch' military assets. All settings such as EMCON and RoE / doctrines have been left alone. The only setting I specifically changed was auto-detection: this is turned off for all structures in the south, and left on for those up north.
Then I switched to US and added 4 aircraft to the one-piece (NL) airport. Four cool F14 Tomcat's
But as soon as I start up this scenario the game starts to glitch: the effective range indicator of both SAM sites starts blinking, and it also displays a number next to it. This is caused by the 4 aircraft which I think makes no sense at all, considering that these are parked and such. Not to mention that the northern area is way out of range for the passive sensors.
To make sure I added a 3rd side; "Germany". Left it neutral and set up 2 structures in Berlin. Then switched back to US and sure enough: even this gets insta-discovered.
As I'm writing this I figured I should at least try to rule out the possibility of some rogue game settings which I might have changed without fully understanding them, so I temporarily moved my .ini files out of the way (config subfolder) and tried again: exact same result.
What do you make of all this?