Conflict of displayDialogAsync and html5-history-api

Question

I have an application by mean-stack that hosts a website and an Excel add-in. html5 is enabled, and it has

<script src="https://appsforoffice.microsoft.com/lib/1/hosted/office.js"></script>
<script src="https://cdn.rawgit.com/devote/HTML5-History-API/master/history.js"></script>

In the Excel add-in, I have a button that opens a page in the website by Dialog API:

$scope.openDialog = function () {
  Office.context.ui.displayDialogAsync("https://localhost:3000/preview/tmp/6wr-4PqdBrYQwjp3AAAD", {}, function () {})   
}

When I click on this button in Excel Online in Chrome, it opens a dialog box with the following url (note that # and several %2F are systematically appended), but it does not prevent from well displaying the page.

https://localhost:3000/preview/tmp/6wr-4PqdBrYQwjp3AAAD?_host_Info=excel|web|16.00|en-us|b6f37f78-e519-7d03-0069-b9c4317a362c|isDialog#%2Fpreview%2Ftmp%2F6wr-4PqdBrYQwjp3AAAD%3F_host_Info=excel%7Cweb%7C16.00%7Cen-us%7Cb6f37f78-e519-7d03-0069-b9c4317a362c%7CisDialog

However, when I click on this button in Excel Online in Firefox, the url changes quickly to the following url, which turns out to display the homepage of the website:

https://localhost:3000/home#%2Fpreview%2Ftmp%2F6wr-4PqdBrYQwjp3AAAD%3F_host_Info=excel%7Cweb%7C16.00%7Cen-gb%7C919fff78-e51f-dc20-0c3c-871b7d0ec25d%7CisDialog

So my questions are:

1) Why does Office.context.ui.displayDialogAsync add systematically # and %2F to the url of my website? Is it possible to prevent this from happening?

2) Is it possible to make a url (regardless of # and %2F) that Firefox accept?

Edit 1: It seems that if I don't use html5-history-api, it will work. So does not know how to disable html5-history-api for that displayDialogAsync? (The reason why I have to use html5-history-api after office.js is here.)

Answer 1

It is not displayDialogAsync that is doing this. It is a frequent issue with Angular routing and Angular location strategy. Search for "angular app is adding hash to my urls" and you will find a lot of information about it and solutions.