Using Watir with Chromedriver. When running tests (not headless), my stylesheets are not applied. When running chrome normally (not testing) my stylesheets show up.
<I assume that you are accessing the application-under-test via embedded credentials. Chrome v59 removes support for embedded credentials in subresource requests. Here's what the documentation says:
Drop support for embedded credentials in subresource requests. (removed)
We should block requests for subresources that contain embedded credentials (e.g. "http://ima_user:hunter2@example.com/yay.tiff"). Such resources would be handled as network errors