Hi there, I've opened an issue about various things that don't look OK mainly in RectBivariateSpline, but also in few other places. Here is the link: https://github.com/scipy/scipy/issues/11756 I would be grateful if someone (do we have a maintainer?) could take a look and just say whether my suggestions/objections are right or I missed something. I've got overwhelmed with other stuff and don't have time for it as for now. Kind regards, Vladyslav Rachek