I powered 2 pistons facing upwards on top of each other with a torch, I expected the bottom piston to extend first and after that the top one like it did in all previous versions.
Instead it extends the top piston. (There is also a visual glitch, it looks like the bottom piston extends but in fact the top one does)
How to reproduce:
1. Build the setup from my picture.
2. Activate the lever.
3. Notice that the top piston extends instead of the bottom piston.
Linked issues
is duplicated by 3
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Comments 7
This report is 50% cooler with clocks and really needs a better explanation.
Firstly, this is more like a [visual glitch|MC-9336], and less like an unintended redstone component behaviour. Secondly, I cannot reproduce this when both pistons are oriened horizontally, but this happens to bottom piston regardless the direction of the upper (unless it is not downwards). And I also feel like this behaviour could probably be caused by recent fix of [MC-8198|MC-8198].
So i guess the report should be called something like "When powering piston on piston wrong piston looks preparing for extension" to avoid confusion, amirite?
Sorry for fastediting.
It's not ONLY a visual glitch, it should extend the bottom piston first and after that the top piston.
(btw I don't know why you added 2 pictures, I don't think it makes it clearer.)
I've been just sharing my findings on what I had understood in the description you wrote. Your latest comment makes things alot clearer, but for my opinion current mechanic is alot more expected because it does not show symptoms of well-known [piston quasiconnectivity bug|MC-108]. I will surely check this in 1.4.7 later...
Powering a piston diagonally with a block is a BUD. I don't think BUDs are bugs.
Powering pistons diagonally with a torch is NOT a BUD. That is normal behavior.
Because of this Bug you can't make a simple double extender anymore. (the extending circuit always was activated by 1 torch, now you have to power the bottom piston first and then you can power the torch.)
Jens Bergensten
i can confirm this