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Hanif Koh
a5d0d33df3
An instance added with "+" was never registered with the plate it landed on, and moving an instance only re-registered instance 0 of its object, so a copy dragged onto another plate stayed unknown to that plate's registry. The plate's filament list, its wipe tower preview and the position clamp all read that registry, so a multi-filament copy moved onto a single-filament plate drew no tower there and its tower position was never clamped. Register new copies at creation, notify exactly the instances a move changed (every instance of the object when one of its parts moved), and drop the registry entry when a copy is removed again.