5.x-4.2 ajax not working properly, layout issues

Hi, just upgraded to 5.x-4.2

The new manage gallery menu is available, but clicking the checkbox changes the image from "visible" to "invisible".. but clicking it again won't change it back. It stays "invisible"! Tried reloading gallery, same result.

The BG gallerys on my nodes now have the text all pushed up against the gallery's right margin, they dont seem to obey the P and BR marks in the node.