Scalable UI and full screen mode

I got a 4k monitor, and this game is clearly made for 1920X1080, so it’s really really hard to read the text when then resolution is set to 3840X2160.
Usually I can get around this by changing the resolution in the game to 1920X1080 as that will then automatically scale the UI up to something worth using, however in this game there doesn’t seem to be a full screen mode, so instead the game window just shrinks to a 4th of my screen, with the same size UI.

Please add scalable UI, and/or full screen mode so it’s possible to make it playable on a 4k monitor