Made such a process for mailing lists
Send action configured here
And an action that, depending on the status, switches further
Created 1 process, everything worked, sent and switched depending on the status
Launched in bulk on 4400 processes, it gradually sends, but the status does not read (does not switch).
This client was sent and even in the account shows the status "Sent"
But in the CRM, the status has not changed.