I took a picture of my AZ ballot. Here is an example where the back bled through.
I noticed that the paper was really thin and the bleed through when flipping front to back. So I purposely did not vote around the presidential or senate sections on the back.
They always had felt markers previously. The picture of the pen on the ballot resembled a sharpie and there were no ball point pens, I looked. I knew it was fucked, but also knew that the votes I cared about were getting marked sufficiently and not over marked. I took the picture to have a record and moved on.