jQuery ajax call appears to be blocked and returns no data

Using `jQuery.ajax` to get `https://cheat.sh/chmod` and it returns no data. If I open the Firefox devtools and __resend__ the request (click "resend" in the network tab), it will succeed and return the expected response. I am not changing anything between the two calls and I cannot see anything wrong with the configuration.

(Side note: I have a nearly identical call to wttr.in that works just fine in the same script.)