Log in on each browser you use and one press of Fuzz or Test fuzz runs the vector in all of them, with every browser's results side by side.
This vector uses SVG to determine which characters cause a self closing tag.
Unable to render tweet button
<svg $[chr]><style><!--</style><img src onerror=log($[i])>
<svg /><style><!--</style><img src onerror=alert(47)>
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