Fish 3.1.0 in Arch Linux using Konsole (but also reproducible in Xterm and Ctrl+Alt+f1/f6 virtual console) with $TERM = xterm-256color.

The prompt is not visible anymore just by changing the prompt to "Sorin" using fish_config. I can still type commands but the prompt is not visible. I observed that the problem happens as soon as I use a non-ascii character in fish_prompt. In the example visible in the screenshot I use "❯" from the Sorin prompt. Also, if I execute "fish_prompt" the expected prompt is printed:

I believe it is probably not related to fonts since:

• The prompt is printed if I manually type fish_prompt
• Spacefish was working fine with fish 3.0
• Starship works fine in bash

How can I debug this? Any tip?