I tried to reproduce this error on 0.1.76 - I don't have access to the previews - and sadly I wasn't able to get this error. Does it happen on other versions of CSP?
Not in the near future, no.
Thus far I'm focused on getting a few bug fixes for next minor version and make it work in windowed mode and triple screen setups.
But I'll keep it in mind, thank you for the suggestion.
If you're running in windowed mode, try having it run in full screen.
The app detects and renders itself to the full screen resolution of your main monitor.
So, for example, if your main monitor runs in 2560x1440 but you open the game windowed in 1600x900, the HUD might be rendered out of bounds and not appear.
If this does it for you, the fix I have planned for the next version, to make the HUD render properly on windowed screens, will be of help.