Still shows valid in my covid19verify app (from Latvia) that was just auto-updated with the latest public keys.
Maybe the update is not complete and takes longer time for some countries. Or the app does not check for revocation lists etc. I don't know the technical details.
Honestly, I don't really mind that because I am not really a fan of vaccination certificates for an extended period of time.
edit: Seems to be fixed, so the key probably wasn't leaked.