SUMMARY Theme icons are not applied when Dolphin runs **outside** of Plasma DE. I've tested Hyprland. Within Plasma, no problem. 24.05.2 is the last version of Dolphin that worked and downgrading to this version fixes the problem! I've confirmed this bug with other (Hyprland) users. STEPS TO REPRODUCE 1. Set custom icon theme 2. Start Hyprland 3. Start Dolphin OBSERVED RESULT Default icons are shown EXPECTED RESULT Custom icons should be shown SOFTWARE/OS VERSIONS Operating System: Garuda Linux KDE Plasma Version: 6.1.4 KDE Frameworks Version: 6.5.0 Qt Version: 6.7.2 Kernel Version: 6.10.7-zen1-1-zen (64-bit) Graphics Platform: Wayland Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor Memory: 62.7 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 4080/PCIe/SSE2 ADDITIONAL INFORMATION
Can confirm on Arch and Gentoo with AwesomeWM. Downgrading to 24.05 solves the issue.
Can confirm, for me on AwesomeWM on Arch the text and icons are all black and do not respect the qt6ct applied theme (which is kvantum for me). Downgrading to v24.05.2 also fixes it for me. One other thing that I noticed was that changing Application Style from kvantum to something else and back again solves the issue but only for instances opened at that time and any new instances are unaffected.
Created attachment 176394 [details] This shows the 2 different versions side by side.
I solved the issue by using this qt6ct patch provided by qt6ct-kde AUR package (https://aur.archlinux.org/packages/qt6ct-kde). After applying the patch (tested on Gentoo / AwesomeWM / Dolphin 24.08.3 / qt6ct 0.9 / Kvantum 1.1.2): 1. Open qt6ct 2. In Appearance tab > Palette, choose "Custom" and in "Color scheme:" select your usual Kvantum color scheme (which now contains "(KColorScheme)" in its name 3. Open Dolphin, the theme (Monochrome in my case) and icons (Papirus-Dark in my case) are now correctly rendered
Also works on my Arch Linux install with AwesomeWM / Dolphin 24.12.1 / qt6ct-kde (AUR) and Kvantum 1.1.3.