With FoA what used to be magic craftable items that could roll two affixes were shifted over into rares, to make it clear that these items cannot get the magic-only ascended affixes. Unfortunately, in the process all differentiation between which items can roll two affixes and which can’t has been lost. Whichever is picked in the crafting menu just says +Random stat(s). Not helpful. Unless you know these items by heart, try to affix one in GrimTools or craft one and see it doesn’t have the second affix, you can’t tell.
My suggestion: change the text +Random stat(s), to +1 random affix and +2 random affixes depending on which is true.