I created a new profile on curseforge, with only flywheel and create, and the textures go crazy and start flairing in huge broken textures across the world when two chests are put together. As well the the chest disappearing and breaking into weird pink and blue lines.

Im having the same issue

Is this similar to #2405?

Is this similar to #2405?

Yes, this seems to be very similar to issue #2405

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Seems fix when i type /flywell backend off

Fixed in 0.4a