Well, not found reports of problems but watching this video of it at
http://wow.joystiq.com/tag/patch-5.4-noodle-cart/ it looks like this is a solo scenario whereby you start with no buttons, then 1 button then 5 buttons. But the bar in question is oddly familiar so suspect they are using the same overridebar but change what buttons to display and when. Especially if the normal overridebar in the other quests etc aren't affected.
Looking at wowhead though I found this lil bit of news.
'If you have a problem seeing your noodle-making buttons (thanks to dominos and other ui addons), don't reload your ui, you can still use them through the 1-3 buttons on your keyboard. I reloaded my ui the first time, which made the buttons show up on my bar, but then once I finished I noticed I had lost credit for queuing for the instance, so I had to drop the quest and do it all over again.'
So, sounds like it's a new trigger somewhere possibly if dominoes doesn't work either.
Looks like someone here
http://www.tukui.org/forums/topic.php?id=29068 found a solution but it messes up the main bar but works for the scenario bar.
So perhaps a different combo trigger or a new one that they are using that they forgot to tell us about... Hey Scott, how about talking to your contacts there again rofl.
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