Clipboard image paste does nothing in coder on Wayland/Sway

[Talanor]

What version of Code is running?

code 0.6.79

Which model were you using?

(GPT-5.4) N/A - the failure happens before any model request is sent, at the paste/attach step (

What platform is your computer?

Linux 6.19.6-2-cachyos x86_64 unknown

What terminal emulator and version are you using (if applicable)?

Alacritty on Wayland/Sway; repros both inside tmux 3.6a and outside tmux. Tested with xterm & terminator as well

What steps can reproduce the bug?

1. Take a fresh screenshot with Satty.
2. Confirm the clipboard offers a PNG image:

wl-paste --list-types

Observed output:

image/png

3. Confirm the clipboard image is valid:

 wl-paste --type image/png > /tmp/clip.png
file /tmp/clip.png

Observed output:

/tmp/clip.png: PNG image data, 3440 x 1440, 8-bit/color RGBA, non-interlaced

4. Confirm arboard can decode the same clipboard image.
   Observed output:

   file_list unavailable: The clipboard contents were not available in the requested format or the clipboard is empty.
   image ok: 3440x1440 (19814400 bytes)

5. Run

coder --debug

6. Focus the composer and press Ctrl+V or Alt+V.

What is the expected behavior?

The clipboard image should attach to the composer.

What do you see instead?

Nothing is attached, and coder --debug shows no extra log lines when the paste shortcut is pressed.

Additional information

• OS: EndeavourOS
• Session: Wayland
• Compositor/Desktop: Sway 1.11
• Shell: Bash
• tmux: 3.6a
• Satty: 0.20.1
• wl-clipboard: 2.2.1
• Repros both inside tmux and outside tmux
• Filepath-based image attachment works in coder
• Clipboard image paste works in Claude Code in the same environment
• Since the clipboard image is valid and decodable by arboard, this looks like a Code-side paste shortcut / event handling bug rather than a bad clipboard payload