When I click the '+' icon from node 1 to add a sub node it jumps to a third position. It happens only with the first node. Attached a sandbox
https://codesandbox.io/p/sandbox/k3y5z5?file=%2Fsrc%2FApp.js%3A165%2C21
#node jumps when new node created in dagre tree
craggy coral
velvet rampart
Oh that is weird, it's likely down to dagre though, so you may want to try isolating just the dagre graph building and querying that behaviour with them.