[MC-53478] "Round Trip Different" Error With Stained Glass, Ender chests, Quartz

A "Round trip different" error displays in the debug screen when stained glass is placed or looked at. This game evidently expects all stained glass to have metadata 0, even though stained glass goes from 0-15. Also affected are nether portals.

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Comments 9

kumasasa 2014-04-25T06:05:51Z

Confirmed.

shufboyardee 2014-04-30T15:59:30Z

still in 18a, also happens with Ender chests and portal blocks..

vis 2014-05-07T16:02:24Z

Also with quartz pillars
http://i.imgur.com/5uzOp9u.png

Ezekiel 2014-05-07T16:49:30Z

and some types of flowers, not all

Itouch2 2014-05-08T14:58:54Z

Confirmed for 14w19a.

alex_dlc 2014-05-15T21:12:24Z

I also get this strange thing with the chiseled quartz block, and the pillar quartz block.

Ed Kelly 2014-06-13T05:35:13Z

I encountered this, and didn't even realize that it was an error...
After seeing which blocks it happens on, I think I know what's going on. The new F3 screen includes the various model names, and variation names. This information is evidence that the devs are making a transition toward moving the game away from a purely numeric world-save structure. As a part of this, the variations and models are no longer handled by adding 'damage' nibbles to the end of the block's data. However, as part of the transition, the code which adds those nibbles still exists. I'd venture that this bug will simply disappear on newly placed blocks after a certain version, but I don't know that it will fix for old blocks placed prior to that version unless they add code to retroactively fix blocks.
EDIT:Also, confirmed for 14w21b

Mr. Raisin Toast 2014-06-16T01:15:09Z

Confirmed for 14w21b.

Itouch2 2014-06-19T11:02:59Z

Fixed in 14w25b.