Do PCs cursed by Fomorians have disadv on all saving throws and ability checks or just ones based on dex/str?

@gilgalad195 @mikemearlsDo PCs cursed by Fomorians have disadv on all saving throws and ability checks or just ones based on dex/str? Just ones based on Dex. or Str.

— Jeremy Crawford (@JeremyECrawford) December 7, 2016