The bug
The redstone wire in jungle temples is not connected. This affects the line from the tripwire as well as the one in the secret piston chamber.
How to reproduce
Seed
-6709163978531081098-6709163978531081098/teleport
/teleport @s -797 68 35 0 18/teleport @s -797 68 35 0 18
Tested on MC 18w09a at the given coordinate and no structures ..
IDK if the structures depend on the seed, if not the seed doesn't change anything.