If you see anytime, connection lost issue in wordpress..

Then you can think that, it is caused by any single or more plugins.

You can deactivate that plugin or you can just use display:none to hide that message for plugin.

Just use this code anywhere in that plugin. Your connection lost message will be gone 🙂

/** Connection Lost Hide for this template /

#lost-connection-notice{
display:none!important;
}