“Hidden” link

Hi Blaz, many thanks for your fine plugin, whose many options I’m testing to move from another one. When adding rmp_social_widget action, subscription link appears “hidden”, it is there, you can click on it, but doesn’t show, or rather shows as a blank space before the exclamation mark. This does not happen with a similar action, rmp_after_feedback_form. I’ve tested this issue in different browsers. Your guide on how to solve it would be appreciated.