Whenever I open RimWorld, it sets it to a weird resolution setting, like 1280x697 or 1280x717. I'm using a late-2013 model MacbookPro on OS X El Capitan v. 10.11.4. This has been happening ever since I started playing, which was during Alpha 14. It's a small problem, but it's annoying having to change it every time I open the game. Thanks!
This is a known issue that currently has the following report on the Mantis https://ludeon.com/mantis/view.php?id=2496
Although I do not know if Tynan needs more information to fix this or not. But if you, or anyone else, does have more information that might be useful, then I'm sure he would be appreciative of it.