I’d like to add another vote for this change. The plugin from user emrl is a decent workaround for now, but this should really be in core. We have a field for a custom URL and one for a Page Link, but there are many cases where a link needs to offer both options in one field (internal and external / custom links). The WordPress link dialog does this already, so it would be great to see it in an ACF field. It could also be done without the native WP dialog, by simply adding an option for a custom URL to the Page Link field type. It’s been years – please consider this Elliot.
