I'm not exactly a redstoner by any means, and I've just found that sticky pistons and redstone blocks aren't playing nice with each other. Kind of hard for me to explain, so I recorded a video showing off my messing around with some sticky pistons and being able to achieve some odd results. One "fun" result is an extended sticky piston not being powered by anything. Another result was that a sticky piston could be activated by a redstone block floating above where the arm would be, but only if a block that touched both it and the piston was placed first before the redstone block. On the contrary, when I tried placing a redstone block in the spot with a wool block floating 1 block above it, it didn't activate. Is this something to do with this "quasi-connectivity" stuff?
https://www.youtube.com/watch?v=sFZhQOk43_E
I do apologize if this has been posted before. Again, I'm not an expert in redstone functionality so aside from a few key things I point out in the video, I don't know what functionality is intentional and what isn't. Hopefully someone with a keener eye can take a gander and see if there's anything wrong (aside from the obvious).
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Also, I just now discovered that sticky pistons lose their grip on blocks if they get powered by a quick pulse. I set up a chain of observer blocks about 10 deep, put a redstone dust at the end and made a left turn with the observer blocks to test "wiring" using observers. Come to find out the damn thing pushes the glass block I used away when I trigger the observer, then grabs it and pulls it back down the next time I trigger the observer. I thought this was something that was fixed before?