Need help using cue control for radar

I need help using radar, I used the custom cue control to setup, but when I bring the cue to get a soft lock on a target, my radar seems to freak out and doesnt do anything. I will paste a clip.

Boosting since no one wants to help

Try letting your radar do another sweep over your target before locking.

I did, multiple times, it still wont fix it, I cant get a soft lock for some reason.