Repeatedly, my Redstone circuits and Rail Systems break when I quit and start my world again.
Here's what I did before it happened.
1: I fixed up the rails and the circuits again.
2: Went away from the area.
3: Came back and they were destroyed.
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This ticket is invalid as it relates to a modded or 3rd party client/server.
Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the plugin creator.
This site is for addressing issues related to the base unmodded MineCraft.
This was tested on Vanilla Minecraft.
What makes you think I'm testing on a modded client?
From screenshots in previous reports you had a radar mod installed, which causes most of the breaking problems.
Right and as I said before,
Because I play with this version more often then not, I test it on Vanilla and see if it works on both. If it does, then I use the other one so that I don't have to switch out every time I need to do something else.
I have 2 different Minecraft folders. One is modded, the other is not.
My worlds from Vanilla are copied to the modded folder, but not vise-versa. I doubt that the mod in the other folder is affecting Vanilla.
I cannot reproduce your problem, I build the exact same setup (see screenshot) reloaded the world 5 times, flew away 3 times from the chunk, redstone and rails stayed where they supposed to stay. Please hold F3+C ingame for 10 seconds and attach the resulting crash report here.
There you go. Error report is above the screenshots.
Couldn't get it to work in a new world, just in that one.