I checked these hairs in my game and confirmed they're all working as they were before patching:
WMSNovaHairV2MESH
WMSNovaHairV1MESH
WMSClaudetteHairMESH
WMSAriaHairMESH
WeepingsimmerNovaHair
teanmoonDeevaHair
suspiciouslypinkladyStayathomeBGC
RopeyfHairGaiaBun
LUUMIAfhairNinetiesBabeHair
GrowfruitYFAppleHair
GrimCookiesYFHairLowBunDread
AH00BBrycenHair
These are all Maxis Match hairs, so I'm not sure if this is a problem just with alpha hair, which I don't use, or not. The file names may vary a little, because I do my own renaming to remove special characters, but the mesh names are unchanged.
I don't use any hair recolors or toddler or children's hair, so I can't speak for those things.
