Thanks allot Largo! I changed it so that the app changes font to Courier New when Consolas is not found. Please try again.

Still not monospaced, but the font has changed. But it works perfectly in Firefox on macOS. Seems that different browsers handle fonts in a special way.

https://www.granneman.com/webdev/coding … t-defaults
Is this information useful?

Added to option to change font: go to Help, Fonts and select Consolas or Courier New. Does that help it? I do not want to default to Courier New.

Thanks for all the feedback!

Tried it. Courier New works for me. Thank you very much! If you like, I can try and test future features on these browsers.
PS: The dark theme is a really cool feature!