https://bugzilla.redhat.com/show_bug.cgi?id=1948197
--- Comment #9 from Stephen Hassard steve@hassard.net --- A few more data point:
1. Installation this morning from the 1.3 beta iso immediately upgrading full via dnf inside a wayland session resulted in the hang with the gnome terminal showing "Running scriptlet: ibus-anthy-1.5.12-4.fc34.x86_64". Rebooting the system resulted in a system that was unable to start gdm properly.
2. Installation from the 1.3 beta iso, rebooting into the newly installed system, removing ibus-anthy and ibus-anthy-python via dnf, then doing a "dnf -y update" resulted in the wayland session switching back to a terminal with a blinking cursor in the top left corner of the screen. Rebooting the system resulted in gdm being unable to start.
I'll testing doing a full upgrade from xorg and see if that works next.