Copying to clipboard does not work on sway

[Freemason-12]

Flameshot Version

Flameshot 12.1.0

Installation Type

Linux, MacOS, or Windows Package manager (apt, pacman, eopkg, choco, brew, ...)

Operating System type and version

Ubuntu 24.04

Description

When try to copy a screenshot section to clipboard these errors appear:

qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()

and the journal logs say:

May 11 14:03:19 ThinkPad-T460 org.flameshot.Flameshot[7692]: qt.qpa.xcb: could not connect to display
May 11 14:03:19 ThinkPad-T460 org.flameshot.Flameshot[7692]: qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
May 11 14:03:19 ThinkPad-T460 org.flameshot.Flameshot[7692]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
May 11 14:03:19 ThinkPad-T460 org.flameshot.Flameshot[7692]: Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

Steps to reproduce

1. run flameshot gui
2. get some arbitrary portion of the screen
3. press a "Copy to Clipboard" button

Screenshots or screen recordings

No response

System Information

System:
  Host: ThinkPad-T460 Kernel: 6.8.0-31-generic arch: x86_64 bits: 64
  Desktop: Sway v: 1.9 Distro: Ubuntu 24.04 LTS (Noble Numbat)
Graphics:
  Device-1: Intel Skylake GT2 [HD Graphics 520] driver: i915 v: kernel
  Device-2: Bison ThinkPad P50 Integrated Camera driver: uvcvideo type: USB
  Display: wayland server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.6
    compositor: Sway v: 1.9 driver: X: loaded: modesetting unloaded: fbdev,vesa
    dri: iris gpu: i915 resolution: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: iris,swrast
    platforms: wayland,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 24.0.5-1ubuntu1
    renderer: Mesa Intel HD Graphics 520 (SKL GT2)

[wait-what]

+1, just wanted to add that this isn't a recent regression. It's been broken for months now (I'm using aur/flameshot-git). It saves the screenshot just fine, but nothing gets copied to the clipboard, as in, it doesn't even overwrite the current clipboard contents.

[Freemason-12]

@wait-what I wish there was an Ubuntu package for the git version though (I'm using Ubuntu 24.04)