Ride a horse in a multiplayer server (with a saddle). Log off while still on the horse. Log back in and there will be 2 horses in the same location (inside each other)(see screenshot). This happens in both survival and creative. I have not tested this in any earlier versions. This doesn't happen in single player.
Environment
Client: Minecraft Launcher 0.7 (Dev) (By Sparamoule)
Windows 7 Ultimate SP1 (build 7601)
Java 7 Update 21 (build 1.7.0_21-b11)
Server: minecraftserver.13w19a.exe
Java 7 Update 21 (build 1.7.0_21-b11)
online-mode=false
29th duplicate of MC-13737, please use the search function to see if your bug has already been submitted. Currently over 56% of tickets are being closed as duplicate.