html.global_attributes.title/svg.elements.title - Tooltip display on focus

What type of issue is this?

Missing compatibility data

What information was incorrect, unhelpful, or incomplete?

Missing compatibility data for Tooltip display on focus.

What browsers does this problem apply to, if applicable?

No response

What did you expect to see?

Compatibility data for Tooltip display on focus, in conjunction to the existing compat data for Tooltip display (on hover).

Did you test this? If so, how?

No response

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

• Chromium bug 829352: "Make the title attribute visible on keyboard focus"
  (The above bug is relevant because the SVG bug was marked as duplicate of it.)
• Maybe relevant:
  • https://bugzilla.mozilla.org/show_bug.cgi?id=97223
  • https://bugs.webkit.org/show_bug.cgi?id=61732

Do you have anything more you want to share?

Example markup to test <title> tooltip display on focus:

<svg viewBox="0 0 100 100" width="500" height="500" xmlns="http://www.w3.org/2000/svg">
  <g fill="white" stroke="green" stroke-width="5">
    <circle tabindex="0" cx="40" cy="40" r="25">
      <title>Circle 1</title>
    </circle>
    <circle tabindex="0" cx="60" cy="60" r="25">
      <title>Circle 2</title>
    </circle>
  </g>
</svg>

MDN URL

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/title

MDN metadata

No response

### Tasks

Start by reviewing the existing compatibility data in svg/elements/title.json and the linked Chromium, Mozilla, and WebKit reports. Verify the reported focus behavior for the HTML and SVG title cases, then add compatibility data where the evidence supports it. Done means the relevant MDN compatibility tables represent tooltip display on focus accurately.