Inconsistent Keystroke Output for Ctrl + Shift + C in Zellij Compared to Terminal (Alacritty)

[ffact]

Description:
When pressing Ctrl + Shift + C in Zellij, the terminal multiplexer sends the keystroke sequence ^[OQ (as observed using showkey -a). However, when the same key combination is pressed in a standalone terminal (Alacritty), the sequence sent is ^[[Q .

Steps to Reproduce:

1. Add the bind in alacritty's config: `bindings = [{ key = "C",        mods = "Control|Shift",    chars = "\u001b[Q" }] `
   

2. Open Zellij and a standalone terminal (e.g., Alacritty).
   

3. In both environments, run showkey -a to monitor keystrokes.
   

4. Press Ctrl + Shift + C in both Zellij and Alacritty.
   

5. Observe the output in showkey -a.
   

Expected Behavior:
The keystroke sequence for Ctrl + Shift + C should be consistent across Zellij and the standalone terminal (e.g., ^[[Q in both cases).

Actual Behavior:
In Zellij: ^[OQ is sent (as shown by showkey -a).
In Alacritty: ^[[Q is sent (as shown by showkey -a).

Environment:
Terminal Emulator: Alacritty
Multiplexer: Zellij
Operating System: Archlinux
Zellij Version: zellij 0.41.2
Alacritty Version: alacritty 0.15.0-dev (9e9e43d2)

PS: I'm sorry i used an llm to file this ticket with few edits. 😪
PPS: checked with tmux it's working as expected
PPPS: other key combinations like Ctrl + Shift + X or Ctrl + Shift + V work fine