Stationary Minecarts on powered rails don't start moving unless
a) they are on a slope, in which case they will go down the slope
b) there is a block on one end of the powered rail block, in which case they will go in the other direction.
I think I've heard this before... but this issue seems to have the better explanation (last time I checked, anyway and that was a year ago).
Unable to reproduce with
/tp @p ~ ~ ~
Two things: A) The "duplicated" blocks are just ghost blocks, try rightclicking.
B) Exploits like this have previously always been marked as private (if I'm not mistaken, correct if I'm wrong), so if you do find an actual dupe, mark it as "Private" please.
It's not the game's fault your command didn't work. You're trying to find an iron trap door with data value of 0, which is the value for an closed trap door facing north on the bottom of a block. (The game uses the data value to store direction, position and powered state of the trap door.) However, a closed trap door facing north on the top of a block has a data value of 8. This should be closed as Works as Intended or Invalid.
I can confirm this bug, pretty annoying when you're trying to make a holographic MSDOS-like prompt on your head.
Imcomplete without exact Commands used.
Works as Intended, I think. It's like a bud piston.
Probably spawn protection, if it is, works as intended.
Unable to reproduce.
I think that's intended torch outburn... does the torch not burn out in 1.7 or lower?
The issue is the Profession & Career combo, exactly like in MC-47630. You're using Profession 1, "Librarian" which only has Career 0, "Librarian". Career 2 doesn't exist and so if the game tries to update the trades list, it crashes.
Works As Intended...?
How much memory is allocated to minecraft on your computer? Also, provide your computers specs in the Enviroment category in the future.
Can you attach your world save, please?
It appears that the level of the potion is the cause here: Setting the Amplifier to below 125 works.
Unable to reproduce, all the levers get filled and drop, also I don't get an Unknown Error. Please attach the Launcher's Game Output.
Are you using /clone x1 y1 z1 x2 y2 z2 x3 y3 z3 destroy ?
If you are, Works as intended, setblock does the same.
If you aren't, update description with EXACT command.
Confirmed, but it's even worse: The Ender Pearl doesn't just "disappear", it either
A) Gets deleted on world reload
or
B) Doesn't get saved with the world.
The Result is the same, the pearl doesn't exist after reload, but I'd have to look into a saved file for the technical aspect of this.
This issue is duplicated by/relates to MC-98822.