External Packages Plugin does not redirect to 404 page on second attempt

[slothtopus]

When running the External Packages Plugin example on code sandbox the 'Click to see axios redirect' link redirects correctly to the 404.vue page on the first attempt. However, after returning to the home page and clicking again, it goes to the standard Nuxt 'Request failed with status code 404' page instead. My understanding is that the axios redirect should work every time, but it doesn't.