It seems that now when you create a gallery for a post you must have it embedded on the post for it to retain it. I tried deleting the embedded gallery but after updating it it would reappear as embedded.
I'm using a car dealership theme that grabs the images from the post's gallery and creates a slideshow, but now I have the theme's slideshow PLUS the WordPress gallery under it.
Is there a workaround for this or am I doing something wrong?
EDIT: I managed to hide the gallery through CSS, but I wish there was a more proper way of doing it.
Also, the theme's slideshow is successfully grabbing the images from the gallery and displaying them, but not in the same order I have them under the gallery settings.