I migrated my theme from Atlas 2 to 3 and the result is some strange styling issues. In the _custom.scss I have for example the following styling: .dropdown-toggle, .dropdown-toggle:hover, .dropdown-toggle:focus, .dropdown-toggle.active, .open > .btn-default.dropdown-toggle { background-color: #fb8c00; color: #fff; width: 48px; height: 40px; } At this moment the background-color is not shown at the front-end. But when I disable the element states :hover and :focus, the dropdown-toggle getting the right orange background-color. It looks like anything with a :hover state, doesn't work. Does somebody know how this is possible? Is this a bug in Atlas 3?