1459147 - iframe src missmatch to loaded content

Status: UNCONFIRMED

(Core :: Layout: Images, Video, and HTML Frames, defect, P3)

Description

[meno.abels]

Attachment: iframe-odd.zip

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20180323154952

Steps to reproduce:

I tried to break a down this problem, the last two days and did not 
found any method to reproduce it.
So what is problem:

First I have a page which only contains an empty head and a body with a static iframe in it. The content of iframe src=url request is not 
shown in the iframe. The content of iframe sticks with the content which was initially loaded on the first load of the url.

This problem persits with me over reload, and only disappears if i 
open a new tab.

I appended a HAR and in this HAR there is the registration page requests from
the iframe "https://tui-wega.audi.com/forms/forms/myaudiv5/registration-al-en" url but the content which is shown in the iframe is from "https://tui-wega.audi.com/forms/forms/myaudiv5/registration-ar-es". I attached two screenshots from the devtools which show these mismatch in the contentWindow attribute url.
These behavior happens only in firefox. I tested also ESR and it does the some odd thing.

I have no clue how i could force the browser to behave like this. The original app does a reload on language change and sets a cookie, but than
the wrong (prev) iframe content is shown. 
The shown content seams to stick with the first loaded content.

Sorry for this vage description but i have no idea how a to describe this
strange behavior better.
If you have an thoughs about what to do to fix this I happy to try this.


Actual results:

There is a missmatch between the iframe src=url and the request/shown iframe content.


Expected results:

The content iframe src=url should be displayed.

Comment 1

[adrien.delhorme]

Attachment: iframeBug.zip

I confirm the bug with this minimal reproducible example in attachment:

• unzip files in a directory
• start a minimal webserver: python3 -m http.server 8000
• go to http://localhost:8000/iframe.html

  The content of the iFrame is "Content 1"

• edit file iframe.htm, and change the iframe's src to http://localhost:8000/content2.html
• reload http://localhost:8000/iframe.html

  The content of the iFrame is still "Content 1" while the source code shows http://localhost:8000/content2.html --> BUG

• force reload with SHIFT + refresh

  The content of the iFrame is "Content 2"