So I was playing Minecraft trying to make a Redstone flying machine and when I was there was air underneath the observer and under the air, there was a piston and when I put a block on top of the observer it made the piston move through the air I tried some other Redstone things that would do the same thing but most of them didn't get a signal except for Sticky Pistons, Pistons, Dropper, and a Dispenser, here's a video of it actually happening:
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This sounds like a pre-existing bug commonly known and utilized in the Java Edition redstone community, referred to as either BUD powering (block update detection) or quasi-connectivity.
violine1101
Thank you for your report!
We're tracking this issue in MC-108, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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