Very similar to the recent issues [1] and [2]. Not sure about armv7h and i686, as Arch Linux ARM and Arch Linux 32 themselves seem to be lagging behind regular Arch Linux currently.

steps to reproduce:
    1) open https://www.parabola.nu/packages/?sort=-last_update&arch=x86_64&q=&maintainer=&flagged=
    2) compare with https://archlinux.org/packages/?sort=-last_update
    3) Remove all servers except the following from /etc/pacman.d/mirrorlist to keep only the main repo and exclude all the mirrors
    Server = https://repo.parabola.nu/$repo/os/$arch
    4) # pacman -Syy
    5) pacman -Ss qt5-base

expected result:
    Step 2: maximum 1 day lag between Parabola repos and upstream repos, all upstream updates except blacklisted ones are available in Parabola
    Step 5: extra/qt5-base 5.15.10+kde+r129-1 (or newer) is in the output since it was updated upstream on 2023-06-15
    actual result:
    Step 2: it looks like Parabola repos stopped syncing correctly since 2023-01-27, because no updated packages are visible since then, while upstream has dozens (hundreds?) at the same time.
    Step 5: extra/qt5-base 5.15.9+kde+r155-1 is in the output

[1] https://labs.parabola.nu/issues/3374
[2] https://labs.parabola.nu/issues/3436