Weirdest thing, in my layout, all my popup over button in browse mode, when click, they stay open, I do not have the X on the top left corner either (but have them in layout mode). Also, when I click on them, they do not open automatically, but if I click anywhere around it will appear. If I click the button again, it seems to be close, but ain't, as all the field behind the "invisible" popover seems to be there.
Anyone ever encountered that problem? Anyway way to fix this?