And the page doesn't even come back from the flash in my semi-locked down firefox. It flashes content, then back to a white page without an empty <body>: DO

And the page doesn't even come back from the flash in my semi-locked down firefox. It flashes content, then back to a white page without an empty <body>: DOMException [SecurityError:"The operation is insecure." Code 18: location: https://reactjs.org/commons-f40206259909ee9b7a40.js:4]`