As far as I remember, the “Jog by X Amount” has never been on the little “Jog” Pop-Up menu; it has only ever been on the “Carve” Pop-Up. If my memory serves me correctly, I do believe I commented on that fact in the thread where Inventables announced the new “Jog” Pop-Up window feature.
Indeed I did … 
New Easel Feature: Machine Jog Controls
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Brandon Parker