Created attachment 537456 [details] [diff] [review]
See bug 662152 comment 2. A simplified testcase would be:
Can you please be more specific on how to verify this bug as being resolved fixed?
Open the error console and execute this:
You should get an exception telling you that 0 is an invalid argument.
Is this the exception mentioned?
Source File: chrome://browser/content/tabbrowser.xml
Considering comment4 and comment5, setting resolution to Verified Fixed.