Bug/Issue Linux HiDPI Scaling Issues

The HUD, menus, and all GUI components, whether ingame or on main menu, are all too small. My display is 4k (3840x2160), which means that I need a scale factor of 2, because its diameter is 28".
In Starbound, everything looks extordinarily small - it doesn't scale at all. Every other application I use scales correctly. Ingame, a zoom level of 4 still looks way smaller than things should be.
On Windows, the scaling is perfect. When in windowed mode, things are a bit blurry, but sized correctly. Fullscreen does not support 4k, only up to 2k (2160x1440), so with that I cannot get sharp graphics. However, in borderless fullscreen mode, I get perfect scaling in fullscreen, and the game is very sharp.

This was on Linux Ubuntu 16.10 64-bit, with KDE 5.7.5 desktop. This bug does not occur on Windows, and I haven't tested Mac. Bug occurs independently of fullscreen, borderless window, and windowed mode.

I've attached the error logs.