problem with PHR (negative values like -2147483621 seen in gnb logs)

I run 1 cots UE (quectel), develop branch (commit 4940146f), b210

I do ping up and down:

sudo ping 192.202.0.2 -i0.01
sudo ping 192.202.0.1 -i0.01

and I see:

[NR_MAC]   Normalized power 103 based on current resources (RBs 4, MCS 6) exceed reported PHR -2147483618 (normalized value)

(Not always same values.)

Looks suspicious to me. Is it normal? Thanks.