Sudden issue of unexpected power off on 7.0.13 and 7.2.7 on previously stable systems

We are aware of the kernel panic mode issue on 7.2.8 and intentionally avoided it. However, in the past month, we've suddenly been hit with many systems experiencing the "unexpected power off" issue. We use Fortimanager and can confirm no recent changes to anything. We even have half the devices using a separate config where half of the systems use SDWAN and the other half doesn't https://100001.onl/ .

Seems to have started in early March.

Reaching out to see if others are experiencing anything similar. TAC case opened and under investigation.

Thanks.