Siginificant negative values at >1200nm in pfsObject?

Checking the recent end-to-end processing with w.2021.30 and old weekly dataset (I believe there is no new dataset yet), there looks to be significant negative feature at wavelength of >1200nm (see attached), which was not in older version (e.g. w.2021.28). I did not check all pfsObjects but this seems to happen in all cases. Please confirm this and fix if this is a problem.