So this happened tonight on a Cloudcore:

The router was totally unresponsive, and stopped passing data. The issue resolved itself as quickly as it appeared, and we didn’t have to reboot the router at any point. The physical interfaces all dropped to 0kps, the cpu was 100%.
Version 3.38.1
A bug? we’ve been running this config for months, without this issue. I’ve sent in a supout.rif.