Minecraft 15w38b, Minecraft 15w44b, Minecraft 15w45a, Minecraft 15w47c, Minecraft 15w49b, Minecraft 15w51b, Minecraft 1.9.1, Minecraft 1.9.2, Minecraft 1.9.4, Minecraft 16w21b, Minecraft 1.10 Pre-Release 1, Minecraft 1.10 Pre-Release 2, Minecraft 1.10, Minecraft 1.11, Minecraft 1.11.2, Minecraft 1.12.2
I've put the command "
execute @a ~ ~ ~ summon FallingSand ~ ~ ~
" in an always active repeating command block. This creates falling torches at players. Most of the time it works alright and the torches that aren't able to get set, just drop. But sometimes things happen like in the screenshots.
In one of it the torches fell onto a block that was at maximum build height (only settable with command), but in some other it wasn't. The bug first appeared at this height, but it doesn't seem to have something to do with the bug. It seems to happen at the edges of blocks, but also on the side of walls.
When I tried it in 1.8.0, it worked.