i have problem with your plugin on new WP 5.0 (Gutenberg). When try to save/publish post loader freeze on Multiple Post Thumbnail box and got notice "Update failed".
I'm not able to duplicate this on a 5.0 install. Do you get any errors in the developer console? Can you try disabling all plugins but this one and see if you still have the problem?
Hi,
i have problem with your plugin on new WP 5.0 (Gutenberg). When try to save/publish post loader freeze on Multiple Post Thumbnail box and got notice "Update failed".