Reply from Saucelabs support indicated that there might be a problem with the WebDriver extension installed in Safari on their VMs. Manually taking over a test run and uninstalling the VM indeed fixed the loading problem of our tests page.
Loading the page with the extension still installed:   Loading the page with the extension uninstalled:  Now waiting for feedback on our options for resolution. [ Full content available at: https://github.com/apache/cordova-plugin-media-capture/issues/105 ] This message was relayed via gitbox.apache.org for [email protected]
