That is strange - it does not do so with my system - using 6.14.0rc1
I cannot completely dismiss a kernel regression. On stable branch it is the first iteration of Linux 6.13 (6.13.0-1) and 6.12 is designated by upstream (The Linux Kernel Archives - Releases) as LTS.
Would you mind switching branch to testing (linux 6.13.1-2) to verify if it is a kernel regression?
sudo pacman-mirrors --api --set-branch testing
sudo pacman -Syu
This may also have an impact on your other issue (System will not suspend after BIOS update)