This will probably be the least useful post ever, but I once had a relatable issue with one of my old mares. When we first introduced her to the idea of jumping, we started with small, natural obstacles- like logs in a field. (We did originally try poles in the ring, but she didn't respect them. (realized they were easy enough to kick out of her way.)) To my dismay, she CLIMBED them. She, being very tall, decided always to slow to a complete stop then lift one foot over at a time, a four step process. When I arrived at a larger log (probably only a foot and a half in diameter) she STEPPED ON IT, and climbed over. She once did this with a very solid coop we had built into our arena fencing. She stepped on top, slid down the other side, and then stood there perfectly content, in fact, pleased with herself, for making it halfway over. I was carrying a stick. She eventually ambled the rest of the way over after giving me a mild heart attack. She finally got the idea she was supposed to leap over things instead of mountain-goat-it after we followed her best friend at speed over a few small things.
The good news is that she remains totally unflappable, and eventually figured out that feet should go over in sets of two.
Perhaps try something more solid as well? (And hope you don't actually own a goat, LOL)