Sounds like some zones were missing when you activated the new one. Does 'show zoneset active vsan X' show everything? Also before you activate a new zoneset, you can run'sh zone pending-diff'to see the changes that will be made.

Yes. Same as zoning for existing vsan 189.Make sure your FC ports for the new devices are in vsan 190 config tzone name new_zone vsan 190member blah-blahexit zoneset name new_zoneset vsan 190member new_zoneexit zoneset activate name new_zoneset vsan ...

I just noticed this today on Windows as well.  The CPU spikes to 50%+ when a chat is marked as a favorite.  When I remove the favorite, CPU goes back to normal.