I have a problem running FTL on my lenovo thinkpad tablet 2 with Windows 10. I have bought FTL on the humble store so I have both a DRM free and a Steam version. Since I'm usually using the tablet on the way somewhere, I would prefer using the DRM free version. However, for some reason, the DRM free version has unreadable text in the menu, while launching the game from Steam works fine.
Here you can find the screenshots
Even if I launch the game from the steamapps/common folder the text is garbled.
The games are both version 1.5.13
I had the same problem on Windows 8.1, but didn't bother to ask and played on my desktop

EDIT: both screenshots are in windowed mode, but the problem is there also full screen
Any idea?
Thanks!