<p dir="auto">On IE edge mode, the form is set to dirty when initialized. I found that it said that was a bug in IE, but had been fixed. Now I am still facing this issue.</p>
<p dir="auto"><a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="100120754" data-permission-text="Title is private" data-url="https://github.com/angular-ui/ui-mask/issues/29" data-hovercard-type="issue" data-hovercard-url="/angular-ui/ui-mask/issues/29/hovercard" href="https://github.com/angular-ui/ui-mask/issues/29">angular-ui/ui-mask#29</a></p>
<p dir="auto"><a href="https://connect.microsoft.com/IE/feedback/details/899139/angular-js-ie11-form-control-dirty-attribute-always-true-if-placeholder-has-non-ascii-chars-and-required-attribute" rel="nofollow">https://connect.microsoft.com/IE/feedback/details/899139/angular-js-ie11-form-control-dirty-attribute-always-true-if-placeholder-has-non-ascii-chars-and-required-attribute</a></p>
<p dir="auto">Any ideas?</p>
<p dir="auto"><strong>I'm submitting a ...</strong>  (check one with "x")</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[x] bug report =&gt; search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request =&gt; Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question"><pre class="notranslate"><code class="notranslate">[x] bug report =&gt; search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request =&gt; Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
</code></pre></div>
<p dir="auto"><strong>Current behavior</strong><br>
Textarea element in form when binding model has initial state as dirty in IE</p>
<p dir="auto"><strong>Expected behavior</strong><br>
Textarea element in form when binding model has initial state as pristine in IE</p>
<p dir="auto"><strong>Minimal reproduction of the problem with instructions</strong><br>
Using ng-form with textarea element and bind model on that textarea</p>
<p dir="auto">Plunker example: <a href="http://plnkr.co/edit/JEgKqSEXGpUDSRDuMXcD?p=preview" rel="nofollow">http://plnkr.co/edit/JEgKqSEXGpUDSRDuMXcD?p=preview</a><br>
Inspect textarea in browser development tool. <code class="notranslate">textarea</code> and <code class="notranslate">form</code> element have <code class="notranslate">ng-pristine</code> CSS class in Chrome/Firefox/Edge while they have <code class="notranslate">ng-dirty</code> CSS class in IE.</p>
<p dir="auto"><strong>Please tell us about your environment:</strong></p>
<ul dir="auto">
<li>
<p dir="auto"><strong>Angular version:</strong> 2.4.7</p>
</li>
<li>
<p dir="auto"><strong>Browser:</strong> IE 11</p>
</li>
</ul>