Here is an example on codepen. A picture of a dog is in the source element in a noscript element. I would expect to see a dog if JS is switched off and a Cat if switched on.


https://codepen.io/Jab2870/full/NvjrrK/

Tested this issue on Ubuntu 14.04 using reported dev version # 62.0.3180.0.

Following are the steps followed to reproduce the issue:
1.Navigated to sample link provided in comment #2 i.e; https://codepen.io/Jab2870/full/NvjrrK/
2.Disabled Javascript and Observed that picture doesnot change even on switching Off javascript

Attaching screenshot for reference.

reporter@ Could you please check attached screencast and confirm us if we have missed any steps in reproducing the issue.

Note: If this issue is consistently reproducible, this may be related to Linux-ARCH specific.

Thanks!

Deleted: javascript.ogv 4.3 MB

	javascript.ogv 4.3 MB View Download

Yes, that is correct. Since creating this bug, I have also tested on other systems including 60.0.3112.90 on windows 10. It does not appear to be specific to linux.

I have also tested in FireFox and the same bug appears to be present there.

Thank you for providing more feedback. Adding requester "jbanavatu@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Per C#4 Issue is seen on Firefox as well and I was able to reproduce the same on on older(45.0.2454.101) as well as the latest(62.0.3181.0) chrome version on Windows-10, Mac OS 10.12.5 and Linux Ubuntu 14.04.

Not sure what's the correct behavior here. I am marking this Untriaged for more inputs and further investigation by the respective team. 

I have also created a big in Firefox's bug tracker. Interesting discussion might also take place there: https://bugzilla.mozilla.org/show_bug.cgi?id=1390100

According to the current specification, <source> must be a child of <picture>. In this case, the <source> is a child of <noscript>.  The current behavior is correct.

If you think this behavior is wrong, please raise an issue to a standard body.

I agree that the picture spec says that the source elements should be directed children, but the noscript spec says that when JS is disabled / not available, the contents of the noscript tag should represent it's contents and the tag itself should be transparent.  I interpreted that to mean that when JS is disabled, the noscript element should represent the source elements and therefore would be a direct child of the picture element.