I ended up getting a few minutes to test a build earlier than I thought. I have just posted a v0.9.1 build for Mac. Downloading this version should solve your problems.
Thanks for your patience!
Thank you for the update! In fact I had been messing with the resolutions manually when my game updated (everythings is all good). Thank you for for the support! (Btw my mac did not support over 1050 vertical)
Side Note- I recoment this website to find the resolutions of computers which I found when messing with it myself