When I am Pressing button, Dispenser is throwing items twice.
I built a Slot Machine and it was not working because Dispensers are throwing items twice.
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Created Issue:
When I am Pressing button, Dispenser is throwing items twice.
I built a Slot Machine and it was not working because Dispensers are throwing items twice.
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starting from 3:21, lasts about 2 min
Added Linked Issues:
duplicates

Single- or multiplayer ?
Survival or creative ?
Modded or vanilla minecraft ?
Can you provide screenshots ?
It is very easy to create a redstone circuit that triggers a dispenser twice off one button press. Is the button directly connected to the dispenser?
This may be a bug, but it is currently well known behavior with an otherwise powered dispenser.
See here: http://www.youtube.com/watch?v=pvZp9_wrlkk
Can someone please provide a screenshot ("very easy") (I will not watch > 30 minutes of video)
A setup like this will dispense 2 items on button click. If this is supposed to be the bug, it's a duplicate of
MC-846Ok, got it. Is in fact a dupe, has something to to with redstone updates below and besides the dispenser.