[MC-12451] Switching from an empty inventory slot to an occupied one while sneaking / bridging can cause you to fall

Steps to reproduce:

Build a bridge sideways (i.e. holding shift+S+D or shift+S+A and right mouse button, while pointing at the side of the block you are standing on).
While bridging, you run out of blocks and switch from the empty slot to a new, full slot using the mouse wheel. (Do not release any keys or mouse button).
Fall to your death.

I can reproduce this in creative mode and survival, in 1.4.7 and 1.5. It is much more likely to happen under increased latency conditions (ping). (I cannot reproduce it in singleplayer, presumably due to the lack of latency.)

Example video 1: http://www.youtube.com/watch?v=MtUK2ydoGd0
Example video 2: http://www.youtube.com/watch?v=wWFUr2AgHtQ

Comments 4

kumasasa 2013-03-20T20:43:30Z

Cannot reproduce with a vanilla server running in LAN.

Chad Waters 2013-03-20T21:23:59Z

It is presumably directly related to the latency.

Tails 2013-03-28T23:02:37Z

Latency is not a bug.

ItsMartin 2013-03-28T23:26:56Z

And this report isn't for the latency. It's for a real bug whose effects are more likely to be seen under higher latency conditions. So your reason for marking it invalid makes no sense.