Reminder that halting issuance is a recommended action during an incident & trustworthy CAs will do it early, until the problem is conclusively identified and remediated.
This happens for both for true "oh-shit" events, and "cross your t's dot your i's" compliance issues and you can't infer which bucket the incident is in just because issuance has stopped.
See
https://wiki.mozilla.org/CA/Responding_To_An_Incident#Immediate_Actions