Hey @TimSueberkrueb
Could you please try to rebuild the snapd package with a patch proposed here https://github.com/snapcore/snapd/pull/3957 and see what you get?
Please use https://github.com/snapcore/snapd/releases/download/2.27.5/snapd-2.27.5-1-arch-srcpkg.tar.gz as the base source package (just update it to 2.27.6 and drop that patch).
Unfortunately we cannot update the stale package in Arch directly (arch trusted users are needed to help us with that).