Libadwaita GTK4 flatpak applications fail to blur at all

[The-Brit]

It appears that any libadwaita GTK4 based applications while appearing transparent fail to blur.

https://github.com/user-attachments/assets/76e3a9c7-1ad3-4f22-959d-937cebed4089

The video demonstrates two native QT applications, system settings and console respectively, perfectly blurred and flatseal, a libadwaita application installed via flatpak, without blur.

Forceblur plugin settings are set to "Blur all except matching" and the match list is empty "Blur window decorations as well"

Kvantum is enabled and the McMojave theme applied

My system specifications:

OS: CachyOS Linux x86_64 Kernel: Linux 6.10.10-2-cachyos Uptime: 38 mins Packages: 1256 (pacman), 9 (flatpak) Shell: zsh 5.9 Display (27GN950): 3840x2160 @ 120 Hz (as 2560x1440) in 27″ [External] * Display (27GN950): 3840x2160 @ 120 Hz (as 2560x1440) in 27″ [External] DE: KDE Plasma 6.1.5 WM: KWin (Wayland) WM Theme: McMojave Theme: McMojave (KvMojave) [Qt], Mojave-Dark [GTK2/3/4] Icons: McMojave-circle-dark [Qt], McMojave-circle-dark [GTK2/3/4] Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK2/3/4] Cursor: capitaine (24px) Terminal: konsole 24.8.1 Terminal Font: Hack (11pt) CPU: AMD Ryzen 9 7950X (32) @ 5.88 GHz GPU 1: NVIDIA GeForce RTX 4080 SUPER [Discrete] GPU 2: AMD Raphael [Integrated] Memory: 7.11 GiB / 93.51 GiB (8%) Swap: 0 B / 93.51 GiB (0%) Disk (/): 66.72 GiB / 1.82 TiB (4%) - btrfs Disk (/mnt/xfs_root): 463.68 GiB / 931.06 GiB (50%) - xfs Disk (/tank): 256.00 KiB / 611.75 GiB (0%) - zfs Local IP (eno2): 192.168.50.168/24 Locale: en_CA.UTF-8