I've found a bug with 12w50a and 12w50b, if you fill in your hotbar with any item (slot 1-9) and then start throwing stacked items on the ground next to you so you are picking them up from the creative menu then they will not appear once you go into inventory tab, to show them you have to open a chest, crafting table etc... and then they will appear in your inventory.
Video: http://www.youtube.com/watch?v=CIKk1K3I6Bo
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is duplicated by 3
Comments 12
http://www.youtube.com/watch?v=CIKk1K3I6Bo
Here's a recording, it's uploading, will be done in about 6 mins.
I can confirm, still bugged. 1.8.1 Pre-3. Just tried.
Stuff that you are picking up is ending up destroyed even when there is empty space in your inventory. It happens when you have any of the block picker tabs open.
Please do not mark unreleased versions as affected. You do not have access to this yet.