It happened 1-2 times in past and now even more with ueberzug, that vifm freezes. Ctrl-C or Ctrl-Zdon't do anything. I have ended up killing vifm process. Is there any other way to get vifm out of frozen state? and any logs that I help find the root cause?
Logs aren't terribly detailed and probably won't help, but you can enable logging with --logging. It might be related to file system operations (say with network file system), which are blocking.