When a repeater is placed in direction f=0 facing a torch it flashes on for 1 redstone tick this does not occur in any other direction. I have videoed it at http://youtu.be/Z6NEc4_Eh8o
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Can confirm.
Also works next to powered redstone.
Thanks so much, Dinnerbone.
Can anybody reproduce this in 13w09b? Looks fixed.
Yup fixed.
Pretty old bug, the repeater does not have to be facing a redstone torch either, it can be beside it, also, please remove environment info as this applies to any environment.