The character ^ E is being entered automatically after each ENTER that you press. This error only occurs when the connection to the Endpoint is made from the CA PAM client.
Any idea about this error ?
What PAM release are you observing this on? The problem is documented as being fixed in PAM 3.2.4, see the following item on page https://docops.ca.com/ca-privileged-access-manager/3-2-4/en/release-information/resolved-issues-in-3-2-4 :