I can’t save flexible content fields, but the other fields are saving. This issue appeared recently, earlier everything was okay. The strange thing is: saving worked a few times on newly created posts, but then suddenly stopped working. But now I can’t even save them on new posts.
I tried duplicating the field group and deleting the old one, but on the copied verion the flexible content field did not even appear.
ACF version 5.11.4
WP verion 5.9