Indeed, it looks like an error/conflict with the JetPack plugin, definitely not theme related in any case.
But, we always do our best to help our customers for all things related to running an online business regardless of whether it’s directly related to our products.
In this case, the only suggestion we have is to make sure that everything is up-to-date, especially WordPress.
Other than that, (and we hate to give you the run-around), your best bet is to post this issue here (https://wordpress.org/support/plugin/jetpack) to get the actual developers eye’s on the issue.
Thank you.