GS1900-8HP: Serial Numbers go missing via CLI and HTTP ?

I'm hoping there is a fix to this. GS1900-8HP, (non-ncc), is not displaying its serial number via CLI nor HTTP.

Model Name:GS1900-8HP
Revision:B1
Device Firmware: V2.80(AAHI.0) | 10/16/2023
As well as:
Device Firmware: V2.90(AAHI.1) | 03/04/2025

Upgraded & Downgraded between V2.90 & v2.80. What is strange, first noticed this on v2.40 then upgraded to v2.70>v2.80 then v2.90.

Factory Default also does not resolve this.
Any suggestions or known solutions?

Unable to find any historical info on this matter.
3x units acting the same.