When the minecart is halfway between a column of water powered by soul sand and rails, the minecart begins to oscillate.

When the minecart is halfway between a column of water powered by soul sand and rails, the minecart begins to oscillate.

New experimental setting "Minecart Improvements" on.

Sorry for bad english, I hope the moderators can understand the issue and that I can help as best I can.

Edit : it seem to also affect the player.