(Setup: Qubes 4 + Whonix)
I followed the Whonix wiki's snowflake in setting up Snowflake:
It was always working before 11-06 and I never had a problem. However after updating snowflake-client and updating Whonix something happened that made stop working. I don't think the problem comes from snowflake-client itself since it works fine with a fresh debian-9 Qubes VM.
Looking at the logs this is where it gets stuck:
[NOTICE] New control connection opened. [NOTICE] Bootstrapped 2% (conn_done_pt): Connected to pluggable transport [NOTICE] Bootstrapped 1% (conn_pt): Connecting to pluggable transport [NOTICE] Tor 0.4.2.7 opening log file.
Edit: It seems this is not just snowflake specific, I tried to use some obfs4 bridges and it didn't work!