Email body rendering really small

What happened?
Attached is a screenshot from my iPhone 15 Pro showing what I’m referring to. Sometimes emails will render the text incredibly small like this, and I’m not sure why. It renders fine using other Apple’s Mail app. I redacted some of the text, so ignore the big gray box.

What mail provider(s) are you using?

What version of iOS?
17.2 beta 2

What build number of Big Mail?
(You can find this in TestFlight)
2.0 (55)