I think this is related but with observers this time.
I built a flying machine only with sticky pistons and it should work (or at least, I think so). Just look in the attached files to see what happens.
Sorry if this is not related.
I totally agree with you. When I tried to build one with sticky pistons so that it can go up and down, the machine just went up and down randomly. Still a bug in 1.9.0
I built a monostable circuit and placed a repeater in front of it. It should have given me a short impulse but it didn't give me anything at all.
[media]
Steps :
1. Place a block and a redstone dust on it.
2. Place a sticky piston vertically and a block on it.
3. Place a block and a repeater on it.
4. Place a block and a repeater on it before the redstone dust already placed.
5. Active with a lever or a button, it won't work as expected.
Watch the video included if you don't understand.
Thank you !
I have the same problem on iOS. The background music works but jukeboxes create no sounds even if the sounds and music are at max volume.