MAS 2.4.1: Frames must have title attribute (#iframe)

[AccessibilityTestingTeam-TCS]

Azure Notebooks - Welcome has an accessibility issue that needs investigation.

Issue Details
Frames must have title attribute
frame-title

Element Path
#iframe

Snippet

<iframe id="iframe" frameborder="0" style="width: 1140px; height: 1379px;" scrolling="no" src="/api/user/ahcan/library/amlsdkwidgets/html/Widgets.ipynb"></iframe>

How to fix
Fix any of the following:

• aria-label attribute does not exist or is empty
• aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty
• Element has no title attribute or the title attribute is empty
• Element's default semantics were not overridden with role="presentation"
• Element's default semantics were not overridden with role="none"

To reproduce
Use K4W to investigate the issue details

Environment
Chrome version 69.0.3497.100

This accessibility issue was found using Keros for Web, a tool that helps debug and find accessibility issues earlier. Get more information & download this tool at http://aka.ms/K4Web.

MAS 2.4.1 Frames must have title attribute (#iframe).zip

[joshuazeltser]

Using the above tool this issue does not occur and the tool produces the following output:

I, therefore, can't see where this issue occurs?

[jtpio]

Closing as there are now different issues tracking accessibility improvements for Jupyter Notebook 7, for example #6800

Thanks!