Afform: Adding forms to menu is not compatible with Customize Navigation Menu

If you add a menu item for a form directly in the form, it shows up sort of where you want it (though the interface to set the order is pretty unhelpful, because you basically are guessing what the weight of existing items in the menu might be). However, if you later go to Customize Navigation Menu, you can move the menu item you created around and it looks like it works and it will work for a while, but then later, it will move back to the location and weight set in the form.

This is confusing for users and frustrating if you don't know what's going on. Seems like we need to have just one way to edit the menu. Maybe it makes sense to simply remove the add to menu option from forms and let users add the menu item manually? Or alternately, we need a way for the menu location and weight to only be used on inserting the menu item and to be uneditable in the form afterwards, maybe with a help text that tells you to edit this directly in the menu.