I recently updated minecraft and found that many of the piston doors that iv'e been using no longer work. The issue appears to be that the redstone timing is largely distorted and inconsistent. I experimented with simple verticle double piston extenders and saw that they sometimes will work, but most of the time will not.
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I have attached three images to this post with titles containing "dpextender". The images show a simple double piston extender design that works in the Java Edition. It will never work in bedrock, but that is not the point. What I want to focus on is the inconsistent behavior of the rightmost piston. Sometimes when the circuit is un-powered, the piston returns to the left, other times staying to the right. If redstone timing was consistent, the circuit would show the same behavior across all trials.
Another example is this tall 4x8 piston door, which is constructed of stacked double piston extenders which, in theory, should all activate and de-activate at the exact same time, because they are all connected to the same line of redstone dust.
[media]However, sometimes when closing, the timings will be out-of-sync, sometimes so out of sync that the door isn't left fully closed:
[media]These inconsistencies are all caused by inconsistent redstone timing. I have a feeling that this problem emerges from the fundamental way redstone ticks are handled.
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