I use vim on a Mac in iTerm2 (ie - not MacVIM) and within a tmux session. I have powerline installed, so that's something to keep in mind.
Sometimes, when I'm typing in a particular file, for some reason, all of a sudden the text changes to weird gibberish.
I've tried quite a lot of different settings to change this, but I'm really at kind of a loss as to what might be causing this. You'll notice in the screenshot that the tmux tab labels (very bottom) are unaffected by this issue. It's almost as if the font that vim is using, all of a sudden switches to a font with different characters.
Anyone got any ideas on this one?