1396690 - Box Model Highlighter markup is duplicated when the tab is dragged

Status: NEW

(DevTools :: Inspector, defect, P3)

Description

[Matteo Ferretti [:zer0] [:matteo]]

STR:

1. navigate to "about:config"
2. set "devtools.inspector.showAllAnonymousContent" to "true"
3. navigate to any page (the default "about:home" is fine)
4. Open the DevTools Inspector.
5. Check at the end of the markup view, you will see:
  <div class="moz-custom-content-container">
    <div class="highlighter-container box-model"></div>
  </div>

  That's the box model highlighter

6. Open a new Tab (cmd / ctrl + t)
7. Drag the previous tab (the one with the inspector active) to create a new browser window
8. Open the Devtools Inspector again

Actual Result:

The <div> "moz-custom-content-container" now contains two box model highlighter (one is hidden)

Expected Result:

Only one box model highlighter markup is present.
It should be only one box model highlighter markup.

Comment 1

[Matteo Ferretti [:zer0] [:matteo]]

A quick fix it would be probably destroy the highlighter instead of hiding when the "pagehide" event is emitted – some highlighter are doing that already.