GatsbyLink will result in a 404 page in development mode when target="_self" is set

[feedm3]

Summary

Today I found out that when setting target="_self" in GatsbyLink, clicking on it will sometimes result in a 404 page. Obviously, this is annoying.

I guess the problem is not related to GatsbyLink itself, but a race condition between the browser opening the page directly without the interception of GatsbyLink. As the target="_self" on a GatsbyLink doesn't bring any benefit, this should either result in a warning from GatsbyLink or not applied to the DOM at all.

This problem only occurs in the development mode.

Motivation

Improve developer experience by informing the developer about unwanted behavior / side effects of the GatsbyLink.