I’m trying to create fields with letters “ə”, “ü”, “ş”, “ç”, “ğ”, “ı”, but not works.
This is screenshot while adding:

After publishing (updating):

I solved this problem myself.
in /plugins/advanced-custom-fields/core/fields/_functions.php Line: 330
change maybe_unserialize() to unserialize()
before:
$field = maybe_unserialize( $field );
$field = maybe_unserialize( $field ); // run again for WPML
now:
$field = unserialize( $field );
$field = maybe_unserialize( $field ); // run again for WPML
Hi @capitol
I’m glad your solution works for you however, it will not be rolled out into the core updates as this could have catastrophic issues across different servers.
@eliiot ,
Which catastrophic issues I can face after this?
Hi @capitol
If the value is not a serialized array, your code will cause a PHP error and the website will crash
I’m facing that problem right now, any idea how to fix it the right way ?