Now the update is online I can almost hear my customers screaming that Rooms failes at 3.0 
But actually I have to say that this is NOT Rooms fault. Apple just made some changes to the UIWebview which displays the chat content of Rooms and these changes came with a little bug.
Some Details:
The WebView loads an initial html template for the chat and Rooms waits until that html is fully loaded using the ‘webViewDidFinishLoad:’ delegate method.
But in the 3.0 Update (only if you are loading some JavaScript within the <head> tag) this method fires a bit too early now.
At this moment, the <body> tag does not exist and so it’s not possible for the app to add the initial content (Chat rooms members, …).
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