<p>That's very strange. Were you on the front page each time? I've upgraded <code>bowser</code> now anyway, so could you try this:</p>
<pre><code>bowser.getParser(window.navigator.userAgent).satisfies({ chrome: ">=53", firefox: ">=55" })
</code></pre>
<p>and this:</p>
<pre><code>JSON.stringify(bowser.getParser(window.navigator.userAgent).parsedResult)
</code></pre>

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