monostable circuit does not power along north south lines

When I try to use a monostable circuit with a north south output it doesn't work

What I expected to happen was...:
Power would head through the redstone and briefly power a block before the piston beneath it moved the powered block, creating a one tick power output.

What actually happened was...:
No pulse was detected from the powered block

Steps to Reproduce:
1. place two repeaters in a line going north/south
2. at the powered end of the repeaters dig out a block, place a sticky piston facing up, and put an opaque block on that sticky piston
3. On the opposite side of the repeaters place a 1-tick t flip flop circuit, do the same on the east or west side. power the circuit