Here is what I mean...
1) Screen Captures for Anti-Aliasing is set to OFF in Preferences:
2) Screen Captures for Anti-Aliasing is set to ON in Preferences:
As you see, in FS v0.6.3 Anti-aliasing makes it hard to see anything. FS v0.6.2 did not do this on my MacBookPro late 2011. Something changed in screen rendering between the 2 versions. My laptop has 2 Video Cards
NOTE: I don't see this Bug in my Win10 (Intel Laptop 2016).