This thing what keeps happening
See the attached screenshot - I'm not entirely sure how to explain it, but sometimes this happens. Not always, and refreshing generally fixes it, but in particular on logs it seems to happen quite often at varying wrong widths. It may or may not be related to the resolution-based width fanciness.
On the other hand, that may even be why it's happening - all my software is basically the same as on my other computer, and yet this never happened on that that I can recall...