Dark/dull red HAFU on A/A radar

[TAW_Impalor]

In some situations contacts go dull on the radar, becoming hard to see. I zoomed in a cropped screenshot. The locked HAFU under the star, and accompanying numbers, is barely visible. Does it mean to be like that or is a bug? This is from quick BVR 8v8 mission. I saved multiple tracks (in VR), but all of them play back only first few seconds. I still attached one, so you don't ask.

dull.trk

[MacEwan]

If I understand the radar correctly, targets will dim slightly as the radar signal return decays. For example, if a subsequent sweep from the radar does not detect the target the brightness will decay until the target is no longer visible or the next radar sweep detects it again.

[TAW_Impalor]

I thought HAFU under lock is insured to stay in the scanning cone

[Tholozor]

Scan volume centering only functions if you box AUTO while in TWS. LTWS in RWS, or MAN in TWS requires manual control.