Nodes disappear when moving between frames

[jesusmpc]

Summary

When moving nodes between different frames (containers), the nodes intermittently disappear or are not rendered in the destination frame. This happens during state reconciliation in the Konva-based renderer.

Steps to reproduce

1. Create a node inside Frame A
2. Move the node to Frame B (via state update or drag/reparent action)
3. Trigger undo
4. Observe that the node:
   • disappears temporarily, or
   • does not appear in Frame B, or
   • is removed entirely from the canvas

Expected behavior

• The node should persist during the move
• The node should be reparented to Frame B without being destroyed
• No visual flicker or disappearance should occur