Undo and redo rebuild every node in place, with the same ids. Nodes 2.0
usually keeps each node's face, and the slot that holds a DOM panel only
mounts an element when it is first made. So after Ctrl+Z every AusBoss
node kept showing the removed node's panel, the rebuilt node's panel
never reached the screen, and changes made on that face never reached
the queued prompt.
When an AusBoss node is removed, the panels it has on screen are
remembered by graph, node id and widget name. When a node with that id
is configured, each of its off-screen panels takes the place of the
remembered one if that one still sits on this node's face. Classic mode,
new and pasted nodes, and faces the frontend mounted itself are left
alone.
ausboss
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