Just the last two days, when I run the launcher, before it even pulls up the news and play button, my computer looks like it fell through a time warp and is now running on a 1980s machine that's on LSD. All icons are four times their normal size, the launcher is bigger than the screen, and my colors are inverted or something The pixels are so big I can see them without my glasses.
If I run Minecraft, it looks almost but not quite normal, and when I quit Minecraft my desktop goes back to normal, even thought the launcher is still running. I'm playing the latest snapshot, but that shouldn't matter if I haven't started the game yet. If this isn't a launcher issue, please tell me what kind of issue it is.