Grid view "lost" data after switching to another window

[wqjh7809]

Hello,
sometimes my grid lost its data when I'm switch the browser window and go back to the grid window. The grid loads and shows the data normal, but from time to time the grid is empty after changing the browser window, but the data are still in the store (I think so, because the paging shows the correct number of entries).

The error occurs with ExtJS 4.1.3 and IE9.

Has anyone an idea to this behavior?

[mitchellsimoens]

Just when you are switch the actual browser window/tab not something within the app? Sounds like a browser rendering issue.

[wqjh7809]

Yes, it's not something within the app, just the browser window (ie9).

[wqjh7809]

Is there an event or another indicator to detect render errors like this?