Really the question is, when will we discover a biological phenomena that can’t be explained by Newtonian physics, including the earlier “wrong” chemistry models?
Photosynthesis was found to rely on a coherent superposition a few years ago
Apparently that finding was itself found to be incorrect. The article doesn’t specifically debunk coherence as the mechanism behind photosynthesis, but it does imply that the real mechanism was discovered to be something else.