no the game is not abandoned in words of the creator sayed:
"DiBS is being worked on in my spare time, usually one or two days a week, so content update is slow.
If you like what you see, well, I'm very glad you do."
The issue lies in how the image is being projected—it doesn't cover the entire screen. In other words, the computer doesn't recognize it as being in full-screen mode. You can resolve this (using my current method) by pressing F11 or accessing the options menu and selecting the "Full Screen" option. Optionally, you could also add a frame around it for better aesthetics.