Minecraft Wiki:Issues/1.4.5

Crashing/system
Bugs

Gameplay
Bugs undefined Items, but not mob type entities, will bounce off of any block that has a visible hitbox where there is actually empty space (NOT Slabs!!) if they are thrown onto such empty space. Can easily be recreated by simply tossing an item into a cauldron. The item in question bounces about, usually bouncing out of whatever was supposed to hold it. #trigger_hurt (I 12:36, 3 December 2012 (UTC)

when you deploy water in a dispenser the bucket left behind will not suck it back up.

Annoyances

World generator
Bugs

Annoyances

Mobs/NPCs
Bugs

Annoyances

Graphical/lighting
Bugs

Annoyances

Sounds
Bugs

Annoyances

Menus
Bugs

Annoyances

In-game interfaces/HUD
Bugs

Annoyances

Chat/commands
Bugs

Annoyances

Language/text files
Bugs

Annoyances