RLP issue
The RLP encoding/decoding is a bit hacky. More precisely the decoding of a list assumes there are essentially no lists inside a list. That is not quite true. In particular in the case of the decoding of eip1559 the accessList
(List of access entries to warm up) is, for the moment ignored. This needs to be addressed at one point once the technology is in place to warm up entries. It does need either using another RLP library or doing a recursive type for RLP decoders. Sorry I left it open I wanted to make sure the main stuff merged and knew it is not immediately needed.