Hmm, yeah that doesn't make much sense. Now that you can place redstone on glass, the issue is even more apparent there. The wire shows as connected (even up the side of the glass) but redstone current can only be sent up. Feel free to review.
Confirmed fixed. Furnaces store the XP when a hopper pulls out the smelted items and give it to the player when the next smelted item is taken out manually.
The Xbox codebase is separate; this project is for bugs affecting the PC version only.
This comment seemed to imply that it was well known behavior. It doesn't seem obviously inconsistent that right-clicking with a firework rocket on the ground should launch a rocket, regardless of how you're moving.
The potato named "Regular Potato" has just been renamed by the mapmaker before being put in a treasure chest. If you encounter this item in a naturally generated map, I'll reopen this issue.
Dinnerbone resolved it as WAI after the comment "So, if I hit the mob, it bounces back, attempting to pursue me, and stops right on the rail, it isn't pursuing me?" I take this to mean that Dinnerbone most likely saw the comment and thought that mobs stopping on rails while pursuing players was also intended.
This ticket was resolved not because the behavior doesn't occur, but rather because it is intentional. If you look in the history, Dinnerbone resolved it as intended. This bug tracker exists so that Mojang can keep track of what issues they want to deal with, and they have decided that this is not an issue, so it is irrelevant whether the behavior still exists in 1.11.
Can confirm that this is still an issue with auto-completing the tag argument.
Still an issue with small armor stands wearing blocks on their heads.
Confirmed fixed.
Yes, potions are now displayed slightly higher relative to their position, so the bug is not nearly so apparent.
It is no longer possible to access the shaders.
No, it's not. See the comments above.
Yes, certainly seems fixed in 16w41a.
Intended. When one receives an update, it powers the block behind, which updates the next one and so on.
Might be intended; the observer is treated as a transparent block also in that it doesn't conduct redstone.
Confirmed. They don't detect when the blocks are placed nor when they grow.
I'm not the one who resolved it and it was resolved many years ago, so I'm not going to reopen it. Mojang can certainly review this bug if they want.