Thank you for the screenshot. I've given you a cow for it.
Here's what it looks like in my printed book. Which matches the file we submitted including the final PDF page proofs.
I'll let the publisher know the Kindle rendering process broke the question. And log it in the errata as a kindle only problem. I suspect there is nothing the publisher can do though since it was right in the file they provided. But I needed the screenshot to at least attempt to do something.