Object Constancy broken when nodes are modified

[rumpeltux]

See demo: https://pastebin.com/TBp5BHNn

In some cases in a transition should keep/move a node, but the node fades out and an equal replacement fades in again.

Instructions to reproduce:

• click "render" to observe a normal transition
• click "highlight" to modify the dom (add stroke-with attribute to the ellipsis)
• click "render" again to observe a broken transition node 0 ("foo") fades out and the same node fades in again

Note: weirdly enough, this seems only broken when the node is modified AND the subgraph is involved, e.g. click "highlight" then "render", the first transition is still fine.

[rumpeltux]

This can be worked around by replacing select('ellipsis') with selectWithoutDataPropagation('ellipsis')

[magjac]

Yes, this is common pitfall with D3. This is detailed in the README.