Question: I've found what I believe to be a bug with Firefox and I'm wondering if this actually is a bug, as well as any workarounds for this.

If you create a basic webpage with the following source:

```
<html>
  <head>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min.js"></script>
  </head>
  <body>
    <div>
      <input id="txtTest" type="text" />
      <input type="button" onclick="$('#txtTest').attr('disabled','disabled');" value="Set Disabled (jQuery)" />
      <input type="button" onclick="document.getElementById('txtTest').disabled = true;" value="Set Disabled (js)" />
      <input type="button" onclick="$('#txtTest').removeAttr('disabled');" value="Remove Disabled" />
    </div>
  </body>
</html>

```

If you `disable` the `textbox` dynamically and then refresh the page, the `textbox` will remain disabled instead of resetting back to its original state of not disabled. I've tried this in IE8 and Chrome and those behave as I would expect, resetting the `textbox` back to not disabled when I refresh.

Another interesting bit of information is that it still does the same thing if the input is a `checkbox` instead of a `textbox`.

Answer: 
This is a *"feature"* of Firefox which remembers form input values across page refreshes. To fix this behavior, you simply set `autocomplete="off"` on the form containing the inputs, or just directly to the input.

This stops autocomplete from working and prevents the browser from remembering the state of input fields.

Alternatively, you can just "hard-refresh" by clicking CTRL+F5. This will completely reset the current page.
This is indeed an open [bug](https://bugzilla.mozilla.org/show_bug.cgi?id=654072) in Firefox. There is also a note in [MDN: `autocomplete`](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete#Values) (scroll down to the second yellow box):

> 
> Note: The `autocomplete` attribute also controls whether Firefox will — unlike other browsers — [persist the dynamic disabled state and (if applicable) dynamic checkedness](https://stackoverflow.com/questions/5985839/bug-with-firefox-disabled-attribute-of-input-not-resetting-when-refreshing) of an `<input>` element, `<textarea>` element, or entire `<form>` across page loads. The persistence feature is enabled by default. **Setting the value of the `autocomplete` attribute to `off`** disables this feature. This works even when the autocomplete attribute would normally not apply by virtue of its type. See [bug 654072](https://bugzilla.mozilla.org/show_bug.cgi?id=654072).
> 
> 
> 

If you are using Bootstrap, you might be interested in the

* [comment on the bug report by a Bootstrap team member](https://bugzilla.mozilla.org/show_bug.cgi?id=654072#c30)
* [bug report in the Bootstrap repository](https://github.com/twbs/bootstrap/issues/793)
* [note in the Bootstrap documentation](https://getbootstrap.com/docs/3.4/javascript/#buttons)