1429642 - Some type errors occur when enable/disable the Responsive Design Mode

Status: RESOLVED DUPLICATE of bug 1273721

(DevTools :: Responsive Design Mode, defect)

Description

[magicp]

Steps to reproduce:
1. Launch Nightly
2. Go to any sites (e.g. https://www.mozilla.org )
3. Open the Browser Console (Ctrl+Shift+J)
4. Enable the Responsive Design Mode (Ctrl+Shift+M)
5. Zoom in (Ctrl++)
6. Disable the Responsive Design Mode
7. Go to about:home
8. Enable the Responsive Design Mode

Actual results:
The following errors are logged in the Browser Console.

In step 4:
TypeError: zoom is undefined  viewZoomOverlay.js:45:5
TypeError: win.gBrowser is undefined  ZoomUI.jsm:69:1

In step 5:
TypeError: aBrowser is null  ZoomUI.jsm:68:7

In step 6:
TypeError: win.gBrowser is undefined  ZoomUI.jsm:69:1

In step 8:
TypeError: zoom is undefined  viewZoomOverlay.js:45:5
TypeError: win.gBrowser is undefined  ZoomUI.jsm:69:1
TypeError: highlighter is null  UITour.jsm:1226:5


Expected results:
No errors.

Comment 1

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

Thanks for reporting!  I agree these errors are noisy and annoying.  Bug 1273721 hopes to remove them.

The errors reported there don't appear to block functionality, but still it would be better to fix them of course.