Hey, and thanks for playing Demon! As a workaround to your issue, try pressing F11 once you are in the main game (can see the dungeon on screen, no other prompts) to switch to full screen mode and see if that is any help.
For a real fix, I may need a bit information about your system: press F5 in game (same conditions as F11) and please tell me what it says, as well as what OS you are running Demon on.
Thanks!
Ah thanks, F11 works great, and for F5 i got "Demon thinks your desktop has a resolution of 1366x768, and is currently running a resolution of 1080x720 (1366x768 in fullscreen). The camera is rendering an area defined by (x:0.00 (107.00 in fullscreen, y:0.00, width:1080.00 (1152.00 in fullscreen), height:720.00 (768.00 in fullscreen)):11.25 (12 in fullscreen)". I am running this on Windows 10.
Oh, and have you considered making a discord server?
It looks like Demon is doing the best it can with the resolution you've got, but 720 is as small as it can go on the Y axis. :( If F11 is working happily, my recommendation would be to continue using that; it is unlikely Demon will support window sizes smaller than Nx720 in the near future.
Demon doesn't have its own Discord, but we do have a channel on the roguelikes Discord. :D This link should be a valid invite for it: https://discord.com/invite/HVBmg7