Bug reporting regarding HTML and JavaScript : <p>I believe I have found a bug in HTML / JavaScript, but I have no idea where to post this bug. Any information on where to post such bugs is appreciated.</p>

<p>The bug can be recreated as follows:</p>

<ol>
<li>Go to <a href="https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_onblur_html" rel="nofollow noreferrer">W3Schools Tryit Editor</a></li>
<li>Make sure you have some other tab open in the same window</li>
<li>Click on the input field to focus it</li>
<li>Click on a different tab in your browser</li>
<li>Depending on your browser, different effects will occur (all unwanted)</li>
</ol>

<p>This has been tested in Chrome (it will give an infinitely repeating alert), on Firefox (it will give the alert, but not switch tabs when clicking the alert away), and on Edge (it will show that the new tab is selected in the tabs bar, but the rest of the page doesn't switchenter link description here).</p>

<p>Since this bug occurs in multiple browsers, and also since the bug occurs with sample code from w3schools, I believe that this bug is related to HTML / JavaScript more than to a specific browser.</p>
