RB 74Ms are bugged in the JAS 39D Test Drive

I’ve been trying to use the RB 74Ms while test driving the JAS 39D, but they won’t lock onto anything,. Not the MiGs, not the sun. Is anybody else getting this issue?

rb74M dont lock the sun im pretty sure

and the migs are mig15s so are pretty cold, how close are you trying to lock with them?

as i am having no issues