[Affected versions]: - Firefox 48 beta 6 (Build ID: 20160706215822) - latest Aurora 49.0a1 - latest Nightly 50.0a1 * reproducible only with e10s enabled [Affected platforms]: - Windows 10 64-bit - Mac OS X 10.9.5 - Ubuntu 14.04 x86 [Steps to reproduce]: 1. Launch Firefox. 2. In about:preferences, set 'When Firefox starts:' to 'Show a blank page' 3. Close and reopen Firefox. 4. Open Inspector: Ctrl + Shift + C (for Windows & Ubuntu) or Cmd + Opt + C (for Mac OS X) 4.1. Dismiss the Developer Edition promo (Beta only). 5. Click anywhere in the Markup View. 6. Navigate to any webpage (E.g.: http://www.bbc.com/) 7. Open Inspector via keyboard shortcut (as in step 4) [Expected result]: - The Inspector is opened. [Actual result]: - At step 6: The Inspector is automatically dismissed. - At step 7: The Inspector is not opened. [Regression range]: - This looks like an old regression: reproducible with 44.0a1 (from 2015-10-01), but not with 36.0a1 (from 2014-11-07) when e10s was enabled by default; will investigate further. [Additional notes]: - Screen recording: https://goo.gl/douFBD - This is applicable for every keyboard shortcut displayed in Developer option via the Menu Panel.
IIRC the start page is non-e10s and we don't support switching the toolbox from non-e10s mode to e10s mode (or vice versa). See Bug 1068400: we are hoping that about:newtab can be converted into the content process so this issue goes away.
Status: NEW → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1068400
Wontfix for 48 here and in the original, we could still take a patch in 49 though.
status-firefox48: affected → wontfix
status-firefox49: affected → fix-optional
Too late to fix in 50.1.0 release
status-firefox50: affected → wontfix
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