I am running Windows 8.1 bootcamp on Retina macbook pro. PyCharm does not seem to handle scaling fonts properly. The quality is so bad it makes it impractical to use the IDE.
See attached image for example. The left side is PyCharm and the right side is Sublime 3 which does scale fonts properly on high density screens. This screen shot was taken with the apps running side-by-side on the same monitor.