GTK windows cause blur/dim to bleed to the titlebar in stacked containers

[InnocentZero]

Please fill out the following:

• Swayfx Version:

  • swayfx version 0.4-b9dcf5f (Nov 9 2024, branch 'master') (based on sway 1.9.0)

• Debug Log:
  https://pastebin.com/hyKN9xiM

• Configuration File:
  https://pastebin.com/Nn6gFQnW

• Description:

  • Any GTK window, when opened in a stacked format with other windows (GTK or not), causes the dim/blur to bleed out to the titlebar of the window.
  • This only dims/blurs the bar of the bottommost window if multiple windows are stacked.
  • This only happens when the last open window in the stack was a GTK window, applications like kitty (which uses glfw) do not cause this.
  • Firefox/librewolf and other firefox forks also cause this, but only halfway through the titlebar.
  • The image below shows when two RNote windows are stacked and the whole thing is tiled with another window.