

If the problem seems uncommon, it's worth checking if this bug has been reported to the browser vendor via their bug tracking system ( Mozilla WebKit Blink Opera). Also, experts, or people with another point of view, can give you ideas for working around the bug. Look, or ask, in specialized forums: you're unlikely to be the first to hit this problem. Are you trying to work around a specific bug in some version of a browser? Start by trying to identify why you want to do it.

When considering using the user agent string to detect which browser is being used, your first step is to try to avoid it if possible.

Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'.Experimental CSP: require-trusted-types-for.Non-standard Deprecated CSP: require-sri-for.Non-standard Deprecated CSP: plugin-types.Deprecated CSP: block-all-mixed-content.Experimental Sec-CH-UA-Platform-Version.Experimental Sec-CH-UA-Full-Version-List.Non-standard Deprecated Large-Allocation.Non-standard Deprecated Accept-CH-Lifetime.
