Anyone else getting no signal bars on LTE in AOSP/CAF ROMs?

[Ascertion]

This plagued my Le Pro3 and Oneplus 3T...It is 100% fine on OOS but when you flash an AOSP/CAF-based ROM there will be a few occasions where the status bar will reflect no signal. It's purely cosmetic but it can be misleading when I'm driving around in an unknown area and not be aware if I can make a call or not while using Android Auto.

Any devs able to chime in? Currently tested RR and it had the issue. I believe all devices are using the same device tree though to build from source. The system is reading 99 ASU which is returning an unknown signal strength which tells the system to display no signal. Any idea where the 99 asu is being read from?

 

[SirYar]

I have had the exact same issue on multiple devices running Lineage or Lineage based ROMs: ZUK Z1, Meizu PRO5 and One plus 5T.
All of them tend to bounce around no bars (ASU 99) and full bars but the network speed doesn't seem to be actually affected.
Meanwhile, all of their stock ROMs, even the ZUK Z1 which ran Cyanogen OS, had always 3-5 bars at all times.
Seems to be a silly visual bug. Anyone knows of a fix?

 

[Ascertion]

I have had the exact same issue on multiple devices running Lineage or Lineage based ROMs: ZUK Z1, Meizu PRO5 and One plus 5T.
All of them tend to bounce around no bars (ASU 99) and full bars but the network speed doesn't seem to be actually affected.
Meanwhile, all of their stock ROMs, even the ZUK Z1 which ran Cyanogen OS, had always 3-5 bars at all times.
Seems to be a silly visual bug. Anyone knows of a fix?

Not sure what it is, but is has been on many devices. It also displays on the Le Pro3, OP3T, and OP5/5T. I don't know if I have a reliable signal when I'm using Android auto and driving around in an unknown area.