Yes, you were right, checked with vibebp - 1.5.5 version and wplms_plugin - 1.5.5 version. The live chat is working when we are using social login but not when user is register with email and then login
http://somup.com/crfrqCFDOf
Trello Link: https://trello.com/c/dqjmPgds/2819-issue-inbuilt-live-chat-issue-v4