Expand DOM is not functioning correctly.

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Go to http://avalanche.nhl.com/club/schedule.htm
2. make sure "show entire DOM" and "Sizzle" are selected
3. search for any tr

What is the expected output? What do you see instead?
The expected output is to have each tr highlighted with the entire DOM showing. 
Instead I do not see the DOM Expand but rather see +documents on a blank white 
page

What version of the product are you using? On what operating system?
I'm using 0.9.7.1 on windows 7 professional sp1

Please provide any additional information below.
This changed when I updated my firefox on 12/9/2014. At the same time it 
upgraded Firebug to 2.07. I tried to deprecate firefox to 34.05 but it still 
gives the same output

Original issue reported on code.google.com by smit...@gmail.com on 10 Dec 2014 at 12:33