The fricking hamburger menu on desktop applications. I don't care if there's an option to use it or even if it's the default option as long as there's a way to get a traditional menu bar. But when it's the only option the designers can fuck right off. Monopoly and privacy aside, I'll never use Chrome just because I have to use a stupid hamburger menu.
I completely understand why it's used on mobile devices, and thus I get why it's used for non-mobile devices. People who are used to it from mobile want it on the desktop. Or maybe your vertical screen space is limited and it lets you get back a line of space for other stuff. But it's really just poorly re-creating the menu bar while requiring (at least) an additional click. When there's no good reason for it, it just sucks. Give me an option to use it or not!
Jeez, i just threw up in my mouth.