[Bug]: No titlebar window decorations under Wayland

[ralmond]

⚠️ Before submitting, please verify the following: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server and Desktop Client are up to date. See Server Maintenance and Release Schedule and Desktop Releases for supported versions.
• I agree to follow Nextcloud's Code of Conduct

Bug description

When I log in, the nextCloud desktop window appears, but with no titlebar supplied by either compositor or application. There is no obvious way to minimize the window.

Also there seems to be a bug in drawing the menus. The menu appears blank, but mousing over an item reveals it.

Steps to reproduce

1. Using Pop_OS 22.04 LTS, with Gnome 42.9 and Wayland.
2. Add "/usr/bin/nextcloud --background" to Startup program list.
3. Log into Wayland session.
   Window appears as show above not minimized (this shows up in a couple of other issues).
   Window has not titlebar and does not have maximize/minimize buttons supplied either by app or compositor.
   Menus operate, but by default menu items are invisible unless mouse is over them.

Expected behavior

There should be a titlebar and controls supplied by the compositor.
All menu items should be visible after pressing on menu button.

Which files are affected by this bug

N/A

Operating system

Linux

Which version of the operating system you are running.

PopOS 22.04/Gnome 42.9/Wayland

Package

Distro package manager

Nextcloud Server version

29.0.7

Nextcloud Desktop Client version

3.15.2

Is this bug present after an update or on a fresh install?

Updated from a minor version (ex. 3.4.2 to 3.4.4)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

Are you using an external user-backend?

• Default internal user-backend
• LDAP/ Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

NA this is not a server issue.

Additional info

The X.Org Foundation Xwayland Version 24.1.2 (12401002)
X Protocol Version 11, Revision 0

(Not sure if using Xwayland or native wayland).

20250104_1444_nextcloud.log.0.gz
20250104_1446_nextcloud.log.0.gz
20250104_1446_nextcloud.log.1.gz
20250104_1450_nextcloud.log.0.gz