[Affected versions]: - latest Nightly 56.0a1 [Affected platforms]: - Mac OS X 10.11.6 - Ubuntu 16.04 x64 LTS [Steps to reproduce]: 1. Launch Firefox. 2. Go to: https://en.wikipedia.org/wiki/Main_Page 3. Load the above site in Netmonitor Launchpad. 4. Select a request and open context menu via right click. [Expected result]: - The context menu is properly opened. [Actual result]: - The context menu is not opened. [Regression range]: - I will follow up with a regression range if any. [Additional notes]: - Here is a screencast with this issue: https://drive.google.com/file/d/0B6qEQD4BO4AlMjFkQ05OZDZ4Y1U/view - This was reproduced with "devtools-launchpad": "=0.0.75" version - Please note that context menu is working as expected on Windows - I can see the following error being displayed in browser console: Error: could not find pref branch devtools.styleeditor.enabled netmonitor.js:35848:16

... > - Please note that context menu is working as expected on Windows The context menu seems to work only on Windows 10 x64/x86 (from what I tested so far). I can reproduce this issue on Windows 7 x64/x86 as well, the context menu is not displayed via right click.

Hi Jan, in the mid-nightly sign offs reports Ciprian from SoftVision is recommending that we fix this bug before 56 nightly merges to beta. I noticed you have tagged this as a P3. Does that mean this will not be fixed in 56? Do you disagree with the severity of this bug and the recommendation from SV?

(In reply to Ritu Kothari (:ritu) from comment #2) > Hi Jan, in the mid-nightly sign offs reports Ciprian from SoftVision is > recommending that we fix this bug before 56 nightly merges to beta. I > noticed you have tagged this as a P3. Does that mean this will not be fixed > in 56? Do you disagree with the severity of this bug and the recommendation > from SV? Hi Ritu, the issue is related to the Launchpad tool that is currently used for development only. Developers can run the Network monitor panel on top of the Launchpad (i.e. within a browser tab), which makes the whole process faster. It's not intended to be used by DevTools users atm. (only by DevTools developers) Also, the fix is independent on Firefox release schedule. As soon as it's fixed dev folks using the Launchpad tool will just get it. So I agree with Ciprian, it's just that fixing will probably take more time. Honza

Here is tracking bug on github: https://github.com/devtools-html/devtools-core/issues/471 Honza

Comment on attachment 8885766 [details] Bug 1378420 - Register new pref; https://reviewboard.mozilla.org/r/156564/#review161852

Pushed by jodvarko@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/8904c48d86ce Register new pref; r=rickychien