inconsistent messages on flutter sdk webview

I have integrated flutter sdk webview with our app and it worked fine but sometimes messages from chatwoot server side is inconsistent.
We need to go back and come again on chat window to see the messages. the messages are not coming in real time. this issue is random and we are sometimes not able to re-generate the same issue.
please help me understand why it is happening and what solution we can do for this.
this issue is lesser known in android devices but frequent in iOS device.

Start by reproducing the intermittent message delay in the Flutter SDK webview, comparing iOS and Android behavior and checking what happens when returning to the chat window. Done means server messages arrive reliably in real time without leaving and reopening the chat.

Written by the indexing model from the issue text.