Clicking Update App gives credentials error on Multiple Audiences App

[StewartPark]

We've recently updated our Dev workspace to use the new multiple audiences feature and the person who updates the app receives the following error when they try to load the app after publishing.

The app is still visible using the navigation bar (left), but instead of loading the reports it loads a list of each report within the app (similar to workspace view). Other apps are unaffected. 

There is no ability to revert back to the old style workspace/app so we now don't have a functional dev environment. 

The testing I was doing immediately preceeding the error was;
Create two personal bookmarks on report page b,
Make change to report page a, save, republish app, 
Pass
Make change to report page b, save, republish app,
Error

Undoing the last step (change to report page b), save, republish does not remove the error.

Each time I updated a page in a report it was with a single textbox.

[SRP · Accepted solution]

Hello, 

Everyone with more than 100 users has your problem, we're all waiting for microsoft's update, planned before mid september

[StewartPark]

Thank you. 

For clarity (and so I can tell the rest of my team), organisations with over 100 users will have this problem and shouldn't use Multiple Audiences until its fixed?

[SRP]

Well. Since it's a bug, i think no one should use Multiple Audiences