On the previous version of zopim (zopim.android:sdk) it was displaying a widget view of 3 dots draw over the apps to resume the current chat session.
Now after upgrading to Zendesk Chat-V2 latest version to fix android 13 compatibility issue
It doesn't work anymore.
It looks like the link you provided is referencing our Zendesk SDK for the Messaging experience - not live chat. With Messaging, conversations are persistent rather than confined to a single session as they are with live chat. We break down other key functionality differences in Messaging vs. live chat: Which is right for you.