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Description
There's some strange behaviour when nodes are resized: if the <ReactFlow /> component re-mounts, the saved node sizes aren't restored. This may be related to how our nodes are all flex containers with relative sizes. It also affects the reactflow <NodeResizer /> component.
Also, we probably want nodes to have dynamic minimum sizes - you shouldn't be able to reduce a node's size to the point where it overflows. It's not clear how to accomplish this.