Tab page use up all RAM, causing Mac to freeze

Question

I have reported this as a bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=975945
It seems that if a certain site (in this case https://parse.com/ ) has a link in the Tab Page thumb, it grabs all the RAM it can to the point of completely freezing the whole system.
This happens in a matter of seconds (200MB > 600MB > 900MB ... 1.6GB). Not quitting FF in time cause a complete system lock where you cannot even get to the "Force Quit.." window, and HD will work endlessly.
I have cleared all history, started in 'safe mode', created a new profile and deleted the old one, problem persist.
Here's how to easily reproduce (given, problematic site is not in your tab page):
(This on a Mac OS X 10.8, not sure about other systems).
1. (optional) Open "Activity Monitor", and switch to 'Memory' tab. (So you can quit FF in time).
2. Open "Tab Page"
3. In a new window, go to "https://parse.com/" and drag the link to the 'tab page'.
4. Watch the RAM pick up (and quit FF before it hit the fan).
I ended up disabling the tab page as I didn't see the problem getting any attention.
My bug report did not seemed to make an impression, it's just sitting there, did I miss something in filing it?

Answer 1

Hi again,
Just having a coffee break and using someone else's account on a Windows machine.
No problem seen on that. Note the new tab page may be opened using the ''about'' protocol & navigating to '''''about:newtab''''' and that besides dragging bookmarks or shortcuts the pinned thumbnails may be set from ''about:config'' the preference is
''browser.newtabpage.pinned''
and the string value now includes
''[{"url":"https://parse.com/","title":"Parse"}, ''
I am going out now but will find time later today to also try this in Firefox on Linux.