Tab panels are designed to render related content, such that only one can be viewed at any given time. Despite all the benefits of this style of display, one is sometimes forced to point out that while viewing a particular tab that you are completely oblivious to whatever goes on in the other tabs. A nice and simple way to keep an eye on a tab while still viewing another is to configure the tab you are interested in to blink when something worthy of your attention occurs.
Consider a scenario where we have a tab panel with one of the tabs containing a Grid object, where we have edited fields and attempted to save the changes to the server. After initializing the save operation, and while the AJAX request is being handled by the server, we may decide to navigate from this tab to another one (or even leave the PC); if we do, we will have no way of knowing if the save operation fails on the server and the changes on the Grid object are persisted. As there's nothing that stops...