Chrome: diff view needs refresh to load the coverage

[wilzbach]

On the initial switch from a PR to the diff view, the coverage information no longer seems to be loaded.
For example, here are all the requests that happen on the switch:

Funnily, after a refresh the coverage information is correctly loaded.

[endophage]

I'm having this issue on every file, both in diff view and when browsing a repository. Always requires a reload to make the coverage info show up.

Browser: Chrome Version 67.0.3396.99 (Official Build) (64-bit)
Codecov extension version 1.0.9