Hello, I am not yet a good topic maker, that is why I hope that you will help me make this topic : if you want any information, any log, tell me and I hope I will be able to give them to you (if not the I'll learn don't worry).

I think it's because of xdg-desktop-portal-kde because it's very unstable usually, often have him crash with a notification from the crash handler, though randomly... And when I do journalctl -b -1 to check what the actual fuck has gone wrong, I always find these guys :

Jun 27 07:41:35 deez-nuts.home systemd[767]: Started app-flatpak-org.kde.konsole-836602819.scope.
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "menuFont"  doesn't exist
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "font"  doesn't exist
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "activeFont"  doesn't exist
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "toolBarFont"  doesn't exist
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "smallestReadableFont"  doesn't exist
Jun 27 07:41:35 deez-nuts.home xdg-desktop-portal-kde[1009]: xdp-kde-settings: Key  "fixed"  doesn't exist

I also had issues with plasmashell but since I made a new user to check if the crashes left it's gone (but not the crashes and still a lot of xdg-portal-desktop-kde).

Pc Specs (hope it's the right thing to do...) :
Operating System: Arch Linux
KDE Plasma Version: 6.4.1
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.12.34-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 12 × 12th Gen Intel® Core™ i5-12400F
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 2060
Manufacturer: ASUS

Unfortunately I am not a good log finder etc., that is why I will wait for you to ask what log do you want, but I'll be active and send it quickly.