Weird UI Issues (No Dark Mode and Missing Button Icons)

[benhaube]

Pre-submit checks

• I checked for similar issues beforehand, but could not find any, not even closed ones. I could not add my bug report to any existing issue.
• I am going to take the time to to fill in all the required details. I know that the bug report will be dismissed otherwise.

Describe the bug

I have weird UI issues on version 3.0.0_alpha_4_gha275 on Fedora 42 KDE Plasma Edition. There is no dark mode, and missing icons on many of the buttons. I have noticed this on the previous builds of 3.0.0 as well. The "release" version does not have this issue. I have not had any issue with the functionality of AppImageLauncher. The four AppImage applications that I have used with AppImageLauncher have all integrated and launched properly.

Expected behavior

I expected to see the application render in dark mode, and to see icons on the blank buttons.

Steps to reproduce the issue

1. Go to Application Launcher
2. Search for Appimagelauncher
3. Click on "AppImageLauncher Settings" to launch the application

or...

1. Download and AppImage file
2. Double-click on the file to bring up the integration window
   or...
3. Right-click on the AppImage file and select "Open With AppImageLauncher"

Screenshots

Distribution and desktop environment

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.16.7-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland

Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: AMD Radeon RX 6600 XT
Manufacturer: ASUS

Installed AppImageLauncher version

AppImageLauncher version 3.0.0-alpha-4 (git commit 0bcc75d), built on 2025-09-07 21:26:00 UTC

List of AppImages you tried

• ente 1.7.14-x86_64 (working)
• OrcaSlicer 2.3.0 (working)
• Via 3.0.0 (working)
• Creality Print V6.1.2.2458 (working)

Additional context

No response