Here is a simple circuit I found recommended on here for generating a very short pulse from longer pulses (in this example from a switch)
However it isn't behaving as expected when resetting a CD4017. The switch only successfully resets the CD4017 if there is long delay between presses, 4-5 seconds, pressing rapidly causes nothing to happen no matter how long I keep repeatedly pressing.
I tried adjusting value of resistor up to 200K to see if maybe the pulse was too short, this made no difference. I have no idea what's causing this strange behaviour.