You know, I am the one who harked most for filmic, but lately it behaves unpredictably for me. This imho isn't Corona's fault, the VFB+ I think does absolutely the same.
Filmic shadows is absolutely weird. Not sure how this is implemented, but it only provides crisp shadows at some particular conditions (maybe some special exposure ?). Other times, it flattens the image !.
I still have some suspicions if we get the correct deal, if it's not supposed to convert to LogC space first, if it's really independent of exposure. And most of all I think I want the full filmic because the simplified is too much for every single scene.
Right now I am back to HC 2-5 + contrast/midtonesboost LuT.