Yep. The element you thought was perfectly fine has a bug.
One line of PSTN with 2 sections of different .TMP2's, each sparked with a different PSCN, moves at different rates. The section with an unset .TMP2 moves faster with the one that's set.
The whole PSTN line is at the same temperature (10C).
NOTE, individual PSTN lines with seperate .TMP2's move at the same speed.
Steps to Reproduce:
This is intentional?
Go to the Repro. There, you will notice that SPRK'ing the red colored PSCN causes the PSTN to move 5px, while SPRK'ing the blue PSCN causes the PSTN to move 1px. Both of the PSTN's are at the same temperature, only the .TMP2 is different.