Top bar present in tiling window managers (Wayland)

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

Today I tried the 5.3 version (git) and I've noticed an addition of a top bar saying "darktable" in the centre and a cross button in the right to close the application. This top bar / title bar is not present in the production version I've also installed (5.2.1).

Tested with:

• Hyprland (Wayland). The bug is present in 5.3; the production version does not show the top bar as expected.
• bspwm (Xorg). The bug is not present in 5.3 nor production version 5.2.1.

As for now, I've not tested it in other Wayland tiling window managers.

Steps to reproduce

1. Open darktable in a Wayland tiling window manager, like Hyprland

Expected behavior

In tiling window managers (Wayland and Xorg), the top bar with the name of the app "darktable" and the cross to close the app, should not be shown.

Logfile | Screenshot | Screencast

Without top bar (version 5.2.1):

With top bar (version 5.3.0)

Commit

No response

Where did you obtain darktable from?

darktable.org / GitHub release. Compiled using AUR.

darktable version

5.3.0+926~g579231c780

What OS are you using?

Linux

What is the version of your OS?

Archlinux

Describe your system

• Framework 13 AMD
• AMD Ryzen 7 7840U w/ Radeon 780M Graphics
• 32 GB of RAM
• Hyprland (Wayland)
• GTK3 3.24.51
• GTK4 4.20.2

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

RustiCL, Radeon 780M Graphics with 4GB of shared memory

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

Reproduce the issue by running darktable 5.3 under Hyprland and compare its window presentation with 5.2.1 and with bspwm. No file or test is named, so trace the window-decoration behavior from the application startup or window setup; done means the top bar is absent in tiling Wayland and Xorg environments without regressing normal window behavior.