Not rendering nerd font character on Kitty Title

[c0mpaBasset]

Describe the bug
I have setted up my Neovim to always change the value of the terminal title. This works perfect for tabs but in the terminal title the NeoVIM icon is not rendered.

To Reproduce
Steps to reproduce the behavior:

1. Set up NerdFont as your kitty terminal font
2. Update NeoVIM titlestring property to show the NeoVIM icon on it
3. See error

Screenshots
If applicable, add screenshots to help explain your problem.

Environment details
kitty 0.36.2 created by Kovid Goyal
Linux fedora 6.10.11-200.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Sep 18 21:09:58 UTC 2024 x86_64
S
Kernel 6.10.11-200.fc40.x86_64 on an x86_64 (/dev/tty)

Running under: X11
OpenGL: '4.6 (Core Profile) Mesa 24.1.7' Detected version: 4.6
Frozen: False
Fonts:
medium: HackNerdFontComplete-Regular: /usr/share/fonts/hack-nerd/Hack Regular Nerd Font Complete.ttf:0
Features: ()
bold: HackNerdFontComplete-Bold: /home/elC0mpa/.local/share/fonts/fonts/ttf/Hack Bold Nerd Font Complete.ttf:0
Features: ()
italic: HackNerdFontComplete-Italic: /home/elC0mpa/.local/share/fonts/fonts/ttf/Hack Italic Nerd Font Complete.ttf:0
Features: ()
bi: HackNerdFontComplete-BoldItalic: /usr/share/fonts/hack-nerd/Hack Bold Italic Nerd Font Complete.ttf:0
Features: ()
Paths:
kitty: /usr/bin/kitty
base dir: /usr/lib64/kitty
extensions dir: /usr/lib64/kitty/kitty
system shell: /usr/bin/zsh
Loaded config files:
/home/elC0mpa/.config/kitty/kitty.conf

Config options different from defaults:
font_family family='Hack Nerd Font' postscript_name=HackNerdFontComplete-Regular
Colors:
active_border_color #7aa2f7
active_tab_background #7aa2f7
active_tab_foreground #1f2335
background #24283b
color0 #1d202f
color1 #f7768e
color10 #9ece6a
color11 #e0af68
color12 #7aa2f7
color13 #bb9af7
color14 #7dcfff
color15 #c0caf5
color16 #ff9e64
color17 #db4b4b
color2 #9ece6a
color3 #e0af68
color4 #7aa2f7
color5 #bb9af7
color6 #7dcfff
color7 #a9b1d6
color8 #414868
color9 #f7768e
cursor #c0caf5
cursor_text_color #24283b
foreground #c0caf5
inactive_border_color #292e42
inactive_tab_background #292e42
inactive_tab_foreground #545c7e
selection_background #2e3c64
selection_foreground #c0caf5
url_color #73daca

Important environment variables seen by the kitty process:
PATH /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin
LANG en_US.UTF-8
EDITOR /usr/bin/nano
SHELL /usr/bin/zsh
DISPLAY :0
USER elC0mpa
XDG_DATA_DIRS /home/elC0mpa/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share/:/usr/share/
XDG_RUNTIME_DIR /run/user/1000
XDG_CURRENT_DESKTOP GNOME
XDG_MENU_PREFIX gnome-
XDG_SESSION_CLASS user
XDG_SESSION_DESKTOP gnome-xorg
XDG_SESSION_TYPE x11

[kovidgoyal]

OS window decorations are not rendered by kitty but by your window
manager.