1162189 - csscoverage is broken on some pages

Status: NEW

(DevTools :: Style Editor, defect, P3)

Description

[Cam]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:39.0) Gecko/20100101 Firefox/39.0
Build ID: 20150506004013

Steps to reproduce:

In either nightly or developer-edition:
visit https://crowdfunding.metabolistics.com/ (in development, sorry it's a mess)
press fn+shift+f2 to open dev toolbar
type csscoverage start
hit enter
type csscoverage stop
hit enter
type csscoverage report
hit enter


Actual results:

after I type "csscoverage stop" there is an error:

TypeError: tab is null
Stack trace:
Toolbox.prototype.selectTool@resource://gre/modules/commonjs/toolkit/loader.js -> resource:///modules/devtools/framework/toolbox.js:1105:5
DevTools.prototype.showToolbox/hostPromise<@resource:///modules/devtools/gDevTools.jsm:412:18
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:867:23
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:746:7
this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:37
Promise*this.PromiseWalker.scheduleWalkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:5
this.PromiseWalker.schedulePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:709:7
this.PromiseWalker.completePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:671:7
Front<.onPacket@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/protocol.js:1217:7
DebuggerClient.prototype.onPacket@resource://gre/modules/devtools/dbg-client.jsm:953:7
LocalDebuggerTransport.prototype.send/<@resource://gre/modules/devtools/dbg-client.jsm -> resource://gre/modules/devtools/transport/transport.js:561:11
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:82:14
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:82:14

and then the csscoverage report is not available when I type "csscoverage report"


Expected results:

The csscoverage report should be available.

Comment 1

[Patrick Brosset <:pbro>]

Inspector bug triage (filter on CLIMBING SHOES).