http://imgur.com/a/WK9jz

Wild ocelots seem to come in two flavors, one where the action button reads 'tame' where they can be tamed into cats, and one that reads 'feed' where they can be bred but never tamed.
In my survival game, all the ocelots I have encountered have been of the 'feed' variety and breeding them results in ocelots that are the same way. This seems to be the vast majority of naturally generated ocelots I have encountered. In creative mode, all the ocelots I have spawned via eggs have been tamable.

The bug is that no tamable ocelots are being naturally spawned, or that these ocelots have no way to transition from the breed-able state to the tamable state but I do not know what the intended behavior is.