While test-driving the brackets.io (Version 1.1) editor on Windows 8, I discovered that the text displayed on the application is not as crisp – it is rather pixelated – at HiDPI resolution of 2880 x 1620. The workaround is to edit the properties of the application and check Disable display scaling on high DPI scaling. This has already been reported as an issue on Github.
Pros: text becomes crisp!
Cons: Icons at the top right hand corner “shrunk” as they are displayed @ 100% scaling.
EDIT: New version of Brackets is out and the issue has been solved.