see attachments for more details

when you place down a fence gate and power it, then opening/closing it with your right click. it shows that the fence is sometimes still closed (data:11) while it isn't.

(a powered fencegate facing East (+X) will have data 15)

Reproduce:
1: take a fence gate put it down facing anywhere (tested East (+X))
2: first open it. and then place a redstone torch next to it
3: hit it with right click. open and closing doesn't seem to work.
although in the F3 menu you can clearly see the datavalue changes (here) between 15 and 11.
walking through the data 15 one will allow you to pass
while the data 11 one is closed. although has the wrong texture!

I hope this explains it well!

Sc.1 powered after placing down fence gate
Sc.2 taken away torch... still gives data 11!!! (expected 3)
Sc.3 still no torch tried to open it again still data 15!! (expected 7)