when opening the details-layer on the plugins-page to check the changelog entries
I get this notice:
Notice: Undefined property: stdClass::$last_updated in /var/www/...../wp-admin/includes/plugin-install.php on line 460
WP version 4.3.1
ACF Pro 5.3.0 installed
Maybe this thread helps:
I am not able to replicate this problem.
Kindly ensure that you are running the latest version of wordpress and acf.
I hope this helps.