I have a very large field group with multiple repeaters and flexible content fields inside one another. It worked for a while, but now when I change something in the field group, ACF removes all the fields from all the groups – not just the one that I’m editing.
No PHP errors are logged and all the max_input_vars etc. variables are set higher than usual.
it’s happening on a local development environment, so it’s not possible to give credentials. If it matters, there are WooCommerce and WPML installed too. The error has happened on two developers’ machines (though pretty much identical Vagrant environments with one another).
If you can come up with any more information about the settings or so, just ask and I’ll provide them.