We had a report that version 0.9.65 of Accelerated Mobile Pages breaks the Dashboard stats view for Jetpack's site stats. These detailed stats are available at /wp-admin/admin.php?page=stats but just load endlessly with version 0.9.65. Downgrading to 0.9.64 solves the problem.
Can you share a screenshot or an image?
We will definitely test and fix this in the next update which will be released on Saturday.
Here is another reference URL: https://wordpress.org/support/topic/no-more-jetpack-statistic-with-0-9-64/#post-9617577
Here's a screenshot of the loading spinner for Jetpack Stats from the Dashboard when v0.9.65.1 is installed and activated.

Here's a possibly related error that one of our users found in their error logs:
(index):520 WebSocket connection to 'wss://public-api.wordpress.com/pinghub/wpcom/me/newest-note-data' failed: Error during WebSocket handshake: Unexpected response code: 403
We have fixed the issue in #1299 and #1303 and released an update last night.
Please update the plugin and clear your browser's cache and it should fix the issue.
Also, we got the confirmation that issue has been fixed in the latest update from WP forum
https://wordpress.org/support/topic/no-more-jetpack-statistic-with-0-9-64/page/2/
Thank you very much for reporting the issue,
Mohammed Kaludi
Most helpful comment
Hey@chaselivingston,
We have fixed the issue in #1299 and #1303 and released an update last night.
Please update the plugin and clear your browser's cache and it should fix the issue.
Also, we got the confirmation that issue has been fixed in the latest update from WP forum
https://wordpress.org/support/topic/no-more-jetpack-statistic-with-0-9-64/page/2/
Thank you very much for reporting the issue,
Mohammed Kaludi