Were they using LPI at the time? To my knowledge they’re sometimes aware of when even an F-22 is locking them because those modes aren’t being utilized for one reason or another.
I don’t think it is a feature, and I think Gaijin would air on not implementing it for balance reasons anyway.
You don’t want the enemy constantly picking up your emissions in LPI / similar modes, I’d assume that is standard EW etiquette. That, and in multi-national wargames they always like to force one side or the other to be at a disadvantage.
I doubt it, the TWS algorithm they use will account for huge spikes in velocity and difference in RCS. So the missile if detected would be assigned it’s own track file rather than switching.
The HMD does not allow the pilot to slave missiles or use the HMD into the cockpit area.
There are no such limits on the aircraft IRL.
The HMD is able to slave weapons, Radar, IRST and targeting pods to wherever the pilot can look, including through the cockpit area.
What the pilot cannot physically see, the radar, and IRST are able to detect and display as targets on the HMS.