1452607 - When in responsive mode with a localhost address the favicon disappears.

Status: NEW

(DevTools :: Responsive Design Mode, defect, P3)

Description

[Marco Hengstenberg]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20180323154952

Steps to reproduce:

I opened a locally hosted website (http://localhost:port) and switched to responsive mode (CMD + ALT + M). When I reload the page, the favicon disappears.

Macbook Pro 13" Mid 2012 (no retina)
Mac OSX El Capitan (10.11.6)
Firefox: 59.0.2 (64-Bit)


Actual results:

Reloaded a localhost page in Firefox responsive mode and the favicon disappeared.


Expected results:

The favicon should stay in place.

Comment 1

[Pascal Chevrel:pascalc]

Mozilla/5.0 (X11; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 ID:20180409220118
Confirmed with Nightly on Linux

Comment 2

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Thanks for the report!

I haven't been able to trigger the issue here with a localhost page and favicon.  I tried:

1. Open new tab
2. Go to localhost page that also has favicon
3. Open RDM
4. Reload

Are there any other steps?  Could you try testing from a fresh Firefox profile?  See Support docs[1] for more info.

[1]: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

Comment 3

[Marco Hengstenberg]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #2)
> Thanks for the report!
> 
> I haven't been able to trigger the issue here with a localhost page and
> favicon.  I tried:
> 
> 1. Open new tab
> 2. Go to localhost page that also has favicon
> 3. Open RDM
> 4. Reload
> 
> Are there any other steps?  Could you try testing from a fresh Firefox
> profile?  See Support docs[1] for more info.
> 
> [1]:
> https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-
> firefox-profiles

Unfortunately your steps are accurate. It is exactly the way I can recreate the issue.
I started Firefox in Safe-Mode (no add-ons or anything which could interfere) and it occured as well.

Comment 4

[Pascal Chevrel:pascalc]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #2)
> Thanks for the report!
> 
> I haven't been able to trigger the issue here with a localhost page and
> favicon.  I tried:
> 

I reproduced the bug with exactly the same steps mentionned in comment #0

Comment 5

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Is there a specific test page I can use to be sure everything is the same?

Comment 6

[Pascal Chevrel:pascalc]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #5)
> Is there a specific test page I can use to be sure everything is the same?

I tested with both the default test page in Ubuntu served by Apache (if you have in installed) and with this cloned repository  https://github.com/surma/ishoudinireadyyet.com served from the PHP built in server (php -S localhost:8082).

In both cases I could reproduce the bug on Nightly in a new profile.