I was creating a redstone circuit, I found that the piston next to it without any block that was going to energize it was operating and giving energy to the sticky piston, in addition, when I removed the blocks these should have returned to their original position, to my surprise it was not so when I realized that one of the pistons was energized.

Here images and a link to a video that I uploaded so that it can be seen better.

Minecraft Redstone

1.- https://youtu.be/bK5RxUUPiIY

2.- https://youtu.be/whSio7Az9oI

3.-https://youtu.be/69bovX-koDU