Found the issue I had set the following environment variable in my scheme: OS_ACTIVITY_MODE=disable. Removing this environment fixed it. Don't recall why exactly this variable had been set, so recording it here for reference.

Note - I ran the same code on my iMac desktop with Xcode 12, and I got the expected output. Other logger messages (from Firebase/Analytics) are also showing up there. Clearly some output setting is different between the two...