Pinterest Pin It buttons only appear once due to browser caching

Hi!

I’ve got W3TC and the “Pinterest Pin It Button On Image Hover” plugin installed on https://www.greatwhitensnark.com, and browser caching is turned on. The Pinterest plugin does what it sounds like it does: On individual posts, Pin It buttons should appear on image upon hover.

Here’s the issue:
– Upon activating the Pinterest plugin and visiting a page on the site, the Pin It buttons appear on images upon hover as expected, but as soon as another page is visited, the Pin It buttons stop appearing (including on all subsequent site pages visited).
– The buttons don’t appear on the site again until I leave the site (e.g., go to cnn.com), clear the browser’s cache, and revisit the site. But, again, even after this reset, the buttons only appear on one page before disappearing again.

I assume there’s some sort of exception I need to add to W3TC for the Pinterest plugin, but I don’t have a lot of experience with that sort of thing and haven’t found much stuff of use on Google, so I’d appreciate any suggestions!

I’m using the Thesis framework, with Classic Responsive theme v1.1.

https://www.ads-software.com/plugins/w3-total-cache/