Today, I was with @bislo1 and @michal_tyrlik at a nicely built galleon. The server had a major lag spike while we were sailing it and after the lag disappeared, the ship randomly began to sink even though no damage was done to it at all…
This is also extremely weird not only because the ship randomly sunk when no damage was done to it. But it was also weird because it did not sink properly like other ships… Parts of the ship sunk to the ocean floor while other parts sank 3 blocks and then stayed floating in mid air.
I have no clue what happened but @michal_tyrlik said that he had seen this occur before with a movecraft airship. Apparently, blocks like wood, wool, and clay have trouble maintaining their sub-IDS when moving on movecraft ships (so different colored wool blocks would change colors at some points while moving). This change in blocks would result in the ship thinking that its missing a lot of required blocks then causing it to sink.

@GodsDead is this truly a problem? I’m not sure what other explanations there are for the ship randomly sinking when it was moving just fine earlier and no damage had been done to it. If this is the problem, it would make sense since the ship had a colored clay ring that only sank a few blocks before stopping in mid air.
Also, why aren’t people in other ranks allowed to make “Cruise: OFF” signs anymore? Was this a problem because of that Movecraft change where perms were all set under one group?