Read More link in month tag not working

I was using the plugin. It works fine when loading the month view first time. But in the next month when you switch the read more link vanish from the event description. If you go on to the below link you can see that the first event in the month listed is showing the read more tag. But if you switch to the next month than the read more link vanishes. Don’t know why. Is that a plugin issue?
Live site: http://millesiwine.com/staging/events/

https://wordpress.org/plugins/the-events-calendar/