I have small piers for a boat consisting of a square of about 5x5 blocks at water level. I have a 2-block gap for the boat to come in, picture the letter G and the boat enters the gap. A single is block just above water level at the entry point on the G, and I have a single trapdoor attached to that at water level. The idea is that when I come into port I open the trap door, sail in, close the trapdoor behind me, and when I get out of the boat it shouldn't go anywhere because of the surrounding blocks and trap door. To exit, I should be able to toggled the trapdoor open, exit, then close it behind me.
But it usually gets stuck in whatever position I last left it, and I can no longer open or close it. This happens with a couple trapdoors in the same configuration. On activation it toggles and then immediately re-sets. Might require game to be played for a while before conditions are set to cause this behavior. Doesn't seem to happen right after entry to game.
I'll provide more info as requested. I searched for open tickets for trapdoors but did not find anything that matches this description.
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Updated Java to latest release and attached screenshots showing trapdoor configuration. Will reconfirm here that issue occurs next time I see it. Happens frequently enough.
Is this still a concern in the current Minecraft version 14w11b / Launcher version 1.3.11 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
Saw this again in v1.8.8 production. While riding in a boat I came to doc in the structure shown in attached images. Opened the trap door while in the boat and it refused to close. Exited boat (surprise I didn't teleport somewhere else) and trap door closed immediately. I'm just reporting this in case someone stumbles by and will try to report again if I can reproduce it.
I would guess that this is caused by MC-2931. The client and server disagree on whether you're close enough to toggle the trapdoor.
So shouldn't this be re-opened? Or since the original issue was fixed should this be a new issued against 1.8.8?
Like I said, I think it's very likely that the underlying issue is with boats, and not trapdoors, and thus what you're experiencing is covered by MC-2931, which is still open. A way to test this would be to activate the trapdoor with redstone, rather than activating the trapdoor directly. Whether or not the button/lever/redstone appears to respond in the same conditions in which the trapdoor is unresponsive would help expose the source of the problem.
Please provide screenshots.