https://bugzilla.redhat.com/show_bug.cgi?id=1948197
--- Comment #21 from fujiwara tfujiwar@redhat.com --- (In reply to Lee Thomas from comment #20)
Reinstalled Fedora 34 this morning, updated ibus-anthy on its own in a tty first, followed by a `sudo dnf update` and it seems to have worked just fine.
Sorry, this way does not help to resolve this issue since it seems to depend on the timing to run the postscripts. I asked the testing way in comment #17.