Ahhh you probably are on that screen that shows the little play arrow in the bottom left? Meaning it shows the play and pause in the bottom left but has the podcast toolbar across the bottom. Tap the actual area at the bottom, right above that toolbar where it lists your podcast name. Meaning not the arrow on the left, but the area just to the right of that.
That then opens up your podcast while playing and you see all the options to fast forward or backup :)