Jetpack 6.4.2 is now available for download. This point fix addresses a bug affecting Social Login on Jetpack Comments.
For this point release, we fixed an issue that was published with Jetpack 6.4, which affected visitors attempting to comment by authenticating with Social Login buttons on the Jetpack Comments form.
The full changelog has more details on this update, and we’re able to answer questions via our support channels.
Thanks for your support!