Save a Structure with a piston facing north and a repeater which powers it directly from the west side. When you load it, you will get a piston without a piston head.
Loading the Structure a second time (when you have a piston or a repeater at the same place) will place the piston head correctly.
Rotating or mirroring the structure has no effect.
Environment
Windows Vista x86
Java 8 92
Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.