MC-880 has been closed without resolving the problem. Why?
Witch spawning ratio seems to be too low, and hence the problems with witches. Actually, I visited three witches huts many times and even stay for the night in a cabin nearby. The huts are generated entirely on swampland so valid for witch spawning. I saw many zombies and skeletons but not a single witch.
The possible solution would be to make the spawning ratio of the witch higher than presently, at least for the first witch present in the hut. It should be more likely to spawn than any other mob as witches huts are rare. It would be even nice if the player meets a witch always in the hut when on hard. Which is more, there is no reason for witch to despawn (if only not on peaceful). Witch huts should not be empty...
Confirmed: affects 13w38c. It even seems that the number of mobs trapped in leaves has grown (more mobs spawn in leaves than before).
@zombie hunter, just do not be egoistic, OK? Maybe YOU do not have problems, I have. And many other people have as well.
I repeat: OptiFine can even double fps. My opinion is that it should be done by the game itself. Why OptiFine can do it and the game itself can't? OptiFine is nothing but a patch to mend the bug I report. You may be of a different opinion. So, what is OptiFine for in your opinion?
There is nothing to quarrel about. I find it a bug (which can be patched with OptiFine), you do not think so. I do not decide here, so you can write "INVALID". How "invalid" as there exists a patch for this bug? OK, you are the boss, I will not help any more, good-bye.