This does not appear to be a bug. Could you please send a dump(built-in tool) for analysis, as it does not appear to be a bug, but rather a problem with the config file parameters? (It is important to enable “DepthProvider.Depth2ColorRegistration” in %NUITRACK_HOME%/data/nuitrack/config beforehand.)
We will be able to provide a more accurate assessment after analyzing the dump.