LDAP passwords in plain text

I’ve set up recently ShinyProxy + Nginx Proxy for SSL inside Docker Compose. I’m using LDAP authentication with Active Directory. I’m completely new to all issues related to LDAP, Nginx etc., but based on docs plus some tutorials managed to get it working. However I’ve enabled logging.requestdump option out of curiosity and noticed that passwords are available in log in plain text. Is it expected or maybe I’ve missed something during configuration? Is there any way to hide them, or hash, or whatever different then plain text?