I have received rare bundles as rewards from bushel of harvests. I have not received any Tsavorite in those bundles even when they contain ALL the other rares from VoV.
I have been having the same result with Pack Ponies. I have received all rares multiple times, but have received zero Tsavorite
I harvested yesterday for over 3 hours (after patch) and never got a Tsavorite rare, I did get the forlorn ore rare but not the gem cluster rare. I need 3 to do the TS Sig line on my alt. Very very very frustrated!!
Since the OP was about the pony or garden reward bundles, not hand-harvesting, this is now a fixed/closed issue as of yesterday's patch.