Responsive Videos Sporadic

Hi, love this plugin! I’m having a problem with the responsive video sizing which is quite sporadic in that sometimes it loads and sometimes it doesn’t and I have to refresh the screen a few times for it to work.

I have noticed that when it doesn’t work the class that you use for the fluid resizing .fluid-width-video-wrapper doesn’t load in the html at all.

We are embedding videos the usual wordpress way with a link on a normal post, nothing special.

You can see an example video here:

Can you help?

https://wordpress.org/plugins/youtube-embed-plus/