CSS does not load on major survey sites like www.surveymonkey.com

  • Description: When viewing the home page of www.surveymonkey.com or filling out surveys on that site, the CSS stylesheet does not seem to load, creating a difficult layout to use. I have also seen this problem on other survey platform sites in the past.

    Before coming here, I reported this as a bug to SurveyMonkey. I received the following reply.

    Thanks for reaching out to notify of these the issues that you've noted within Opera.

    At this time, Opera is not one of our supported browsers, which is likely why you're encountering these issues. To ensure optimal performance, we recommend utilizing a version of one of our supported browsers.

    Please refer to this article for more info about our supported browsers: https://help.surveymonkey.com/articles/en_US/kb/What-browser-versions-do-you-support

    Steps to reproduce: Visit www.surveymonkey.com in Opera.
    Actual result: A plain text web site with no styles.
    Expected result: A well-formatted web site, like I see in Chrome.
    OS: 10.11.6
    URL: www.surveymonkey.com
    Version of Opera: 47.0

    Errors such as the following appear in the developer console on www.surveymonkey.com. They may hint at the cause of the issue.

    [Report Only] Refused to load the stylesheet 'about:blank' because it violates the following Content Security Policy directive: "default-src https: data: 'unsafe-eval' 'unsafe-inline' 'self'". Note that 'style-src' was not explicitly set, so 'default-src' is used as a fallback.
    Redirect from 'https://csp.surveymonkey.com/report?a=prod&e=false' has been blocked by CORS policy: Redirect location 'about:blank' has a disallowed scheme for cross-origin requests.

  • Offhand, I would say that there are stylesheets loading from www.surveymonkey.com. I got what looked like a normal page.

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