You are using the oldest version of assets/terminal.css in the _assets_terminal_css in bindata.go
The font-family is "Monoco, courier" which would fallback to Nimbus Mono L on my system and is very ugly.
Please either change it to just "monospace" and let fontconfig to make the choice, or to follow upstream as it includes "Liberation Mono" now.
You are using the oldest version of assets/terminal.css in the _assets_terminal_css in bindata.go The font-family is "Monoco, courier" which would fallback to Nimbus Mono L on my system and is very ugly. Please either change it to just "monospace" and let fontconfig to make the choice, or to follow upstream as it includes "Liberation Mono" now.