Failed to execute 'removeChild' on 'Node': parameter 1 is not of type 'Node'.

The gist here is that OP assumes length (var i and v) from the internal state (which can be corrupted) as there are no mux locks and realized state in dom.

Kinda sounds like #160. I think there is a race condition when nodes are being simultaneously added and removed, as in my case this does not happen if I add some delay during ops.