08-31-2017, 12:08 PM
Hi, welcome to the forums!
The redstone simulator in Cuberite is a bit different than in Vanilla, there's a lot of corner cases in Vanilla that aren't matched in Cuberite.
That said, I'm having a little bit of trouble reproducing exactly the bug you're having (I'm trying in 1.12 client, a recentish dev build of Cuberite). Is the issue that you have three sticky pistons, the bottom one extended and the top two retracted, and when the bottom one retracts it only pulls the middle piston and not the top piston? According to my 1.12 Vanilla client (in a singleplayer world), that's expected behavior.
The redstone simulator in Cuberite is a bit different than in Vanilla, there's a lot of corner cases in Vanilla that aren't matched in Cuberite.
That said, I'm having a little bit of trouble reproducing exactly the bug you're having (I'm trying in 1.12 client, a recentish dev build of Cuberite). Is the issue that you have three sticky pistons, the bottom one extended and the top two retracted, and when the bottom one retracts it only pulls the middle piston and not the top piston? According to my 1.12 Vanilla client (in a singleplayer world), that's expected behavior.