Looks like they added something to help locate it in the ‘promoted’ build on github:
UE_LOG(LogPropertyNode, Warning, TEXT("UI Min (%s) >= UI Max (%s) for Ranged Numeric property %s"), *UIMinString, *UIMaxString, *Property->GetPathName());
Thats in SPropertyEditorNumeric.cpp .
Which version of the editor are you using at the moment?