UPDATED
There are specifically two problems that occur in 1.11.2 creative/survival singleplayer and on realms as well:
1. Tame ocelots will stalk towards the player when the player is holding fish.
When feeding them the fish they will have the same reaction as a wild ocelot but will enter breeding mode.
2. Wild ocelots that are not stalking the player will emit hearts when fed fish.
Does occur in all gamemodes but is only an issue for creative mode since ocelots that are not stalking the player will not sprint away.
Despite the hearts, they do not breed or tame
A quick video of it here:
Related issues
Comments


Cannot reproduce in 1.11.2

I'll record a video of it and upload it to my youtube channel tomorrow (I'll post the link as another comment). A friend of mine was experiencing the same issue.

@unknown: make sure to have the debug screen ( F3 ) enabled in Minecraft when recording the video.

I'm going to update the post with my new findings, the video will be up here https://youtu.be/FZEPwr5C6Lo in about an hour.

So,
Tame ocelots will stalk towards the player when the player is holding fish.
This might be a bug.
They will eat the fish, emit hearts and sit as if you just tamed them for the first time. However, they will also enter breeding mode like tame ocelots and will breed when sat up.
I believe this is an intended behaviour. Because hearts showing above the tamed ocelots means that they are in breeding mode.
Wild ocelots can be fed fish when they are not stalking the player.
They can be fed fish to initiate breeding mode and breed with each other to make baby ocelots instead of baby cats (kittens).
Upon feeding them they will emit hearts as if you tamed them or were breeding them, however they do neither.
The ocelots should have bred together but did not, so this is a bug.
Similarly, in creative mode, they can stalk over to the player then stop stalking. They will stand there and look down for a moment but may look back up like they are still staring at the player. Hence when you try to feed them they will falsely emit hearts but will not tame.
From the video I've seen that you posted, it seems like you turned too fast. Try turning to the ocelots slowly.

I know some of it was just part of the game but that for whatever reason wasn't functioning like it was supposed to. Either way it needed to be mentioned and looked into.


I can't link anything.

Nevermind, it is now MC-112054
I can't reproduce this bug... It's working just fine for me. Redone step 3 and my cats can still do all those you specified. However, tamed cats seem to creep up slowly to the player if the player is holding a raw fish. Upon using the fish on the tamed ocelot, the ocelot would just enter "breeding" mode.