On one of our development sites we updated to the latest version of Meta Box. (v 5.7.0 and AIO 1.20.3).
Media library isn't loading anymore when selecting featured image (or any image for that matter). Problem seems resolved when meta box is disabled.
Is there anyone else who experiences this problem?
I do not see that issue on my demo site. Can you please deactivate all plugins except Meta Box, Meta Box AIO and switch to a standard theme of WordPress then check the issue again? Please turn on WordPress debug log and see if there is any error at the current time. https://wordpress.org/documentation/article/debugging-in-wordpress/
I have. Problem persisted until I deactivated meta box.
I reverted back to the previous version of meta box and the problem seems not to exist in the previous version.
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