Comparators not reacting to short pulses.

What I expected to happen was...:
I expected the comparator to activate for 1 game tick as it got a 1 game
tick long pulse.

What actually happened was...:
The comparator didn't react to the pulse at all.

To reproduece:
Build what's in the picture

The piston monostable will output a 1 game tick long pulse into the comparator.