For some reason, item frames seem to duplicate upon logging off and back in. However, it doesn't seem to duplicate for every world. It may have something to do with the superflat preset I was using. For reference, the preset I used was:
2;7,60x1,5x3,2;3;
It was creative mode with generate structures set to off.
Steps to reproduce:
1. Place an item frame on a block, and put an item in the item frame
2. Save & quit to file
3. Load the world back up
4. Hit f3 and notice the extremely high entity count
5. Break the block that the item frame is on
6. When the item frame breaks, it will drop a lot of item frames as well as the item that was put inside of it (764 to be exact)
Linked issues
is duplicated by 11
MC-54264
Item frame bug
Resolved
MC-54336
Item Frame and Item's in Frame Duplication
Resolved
MC-54650
Entity overflow from item frames
Resolved
MC-55621
When I open my world item frames and there contents are repeatedly spawn on the floor
Resolved
MC-56343
Dupe Glitch (all snapshots from 14w11b)
Resolved
relates to 1
Attachments
Comments 19
This bug isn't the same as MC-2605; with this bug, the item frame is being duplicated over 700 times upon quitting and logging back into the world. Only one item frame was placed initially (as you can see by watching the gif). This is a serious bug that needs to be fixed before the 1.8 release.
Was able to reproduce. definitely not a copy of MC-2605
did exactly like you and ended up with 8 stacks +45 items of stone and the same amount of frames
seems to be specific to the preset world
I too can confirm that this is happening, I've experienced it with multiple flatworld presets. This is not related to the bug that this has been set as a duplicate of. That must have been an oversight, please re-open this bug. Thanks.
I have a build with item frames that crosses over the z=0 line. Item frames on the South of z=0 are fine, but item frames on the north of the line bug out as described here. Odd, considering the build is otherwise perfectly symmeterical.
I was also in a superflat world that just generated a single layer of air.
Stumbled upon a video demonstrating this bug here: https://www.youtube.com/watch?v=iq2Rg_SAOGQ
According to the video's creator it occurs on chunk boundaries. You can see him demonstrate the glitch with the item frame entity and mobs.
Tried testing this in 14w26c, but the world won't load. I think I triggered this bug and a similar one. Minecraft not doing much for a while now.
deleting world file. MC stopped responding after I tried to close it. I guess this is the big reason it needed to get removed. It could corrupt save files (or at least make them hard to open without a beefy computer). Definitely glad I didn't test this on a friend's server. He would've killed me!(i've crashed it about 3 times in the past 2 months)
Not a dupe bug.