“Like” button vanishing after “read more” clicked

I’m using WP Ulike on a Buddypress installation. It’s generally working well and it’s a useful tool. One small hitch is that the “like” button disappears once I click on “read more.” If I expand a post beyond the excerpt, the only way to then “like” it is to refresh the page. I don’t know if this is inherent in the coding of the plugin, or whether there’s some setting I can change that will prevent this behavior.