The UI font issue seems to be resolved in the latest beta (blender-2.80.0-git20190611.8aa87972cac3-x86_64).
Jun 11 2019
Mar 26 2019
@William Reynish (billreynish) that is likely the tutorial my son was working from when he created this. Nice find.
@William Reynish (billreynish)
What version of macOS are you on?
And what version of Blender did you use?
Note I tried disconnecting the eGPU and just using the internal GPU and display on this 15" MBP (Radeon Pro 460) and that didn't change anything (both opening the file in 2.80 still had font issues and trying to render it in 2.79 still failed).
System locale screenshot attached.
I tried "Load Factory Settings…" in Blender File menu and then opened the test file again and problem is still there.
Not intentionally. Was created in english and should still be in english. How do I check?