[MC-10593] Wither spawner not working correct

When a spawner tries to spawn a wither, it fails on peaceful difficulty (appears briefly then disappears). This is incorrect as when you build the wither normally, it does not despawn on peaceful. If you need more info, I can make a video but this seems pretty self explanatory.

Linked issues

duplicates 1

MC-1202 Mobs spawn and then quickly despawn in peaceful. Looks like the "ender-porting-out-of-water" effect. Resolved

Comments 2

Tails 2013-03-01T02:31:23Z

Duplicate of MC-1202, please use the search function to see if your bug has already been submitted. Currently over 52% of tickets are being closed as duplicate.

Zach Hammitt 2013-03-01T02:34:49Z

I'm not frustrated (we are all trying to make the game better) But sometimes the other issues have such different wording, I don't know how one would think to search some of this stuff.