jp01

I’ve just started seeing the problem as well and the only recent change was updating to 4.0. As a temporary workaround, I added the URL from https://developer.linkedin.com/documents/share-linkedin as a custom share button.

Sorry, I meant to update this earlier. It turns out the theme we are using (Sterling) had code buried inside that disables a few of the modules, one of them being sharing (apparently it causes UI glitches for a feature we’re not using). I’m not sure why it only started disabling it when I updated Jetpack, but once I commented that code out, sharing works fine.