This happen really rare, i've used comic applet on my desktop about years, but in such cases dataUpdated is not called and busy indicator *burns* cpu. So i provide possible fix in comic provider, data engine, when redirection is needed error timer is not restarted in such case error is never handle properly. But *every* case i made a more aggressive solution, a timer in comic applet, if in 3 minutes dataUpdated isn't called it just force disconnect engine from source and stops indicator.
CCBUG: 363292