Custom code / iframe / bug?

I have used a custom code with this iframe :
<iframe frameborder="0" allowfullscreen src="my_app_earth.html"></iframe>
But it doesn’t work !
When I checked with the inspector web development, I have found BSS has copied the html document code inside the iframe tag
Is that a bug ?

This is just how firefox dev tools displays the frame. Right click the page and choose View Page Source - it should be identical to what you’ve written.

it was chrome. and this tool is the most reliable for dev

Right, but what @Martin is saying is that the code that comes out of the Dev Tools is not the actual code that is on the page. Check the source code and you’ll see the code you expect to see.