In Stable, sddm was not blocking VT2 etc. Now it blocks VT2 (VT1 is blocked for some time by boot messages, unfortuantely). So the first usable VT is VT3. When I restart sddm after the crash (see #1072840), VT1 is used, so I can use VT 2 again for work. I could not figure out where this is configured, the files in /etc/sddm/ do not seem to govern it. Kindly use VT1 by default.