In the new ArcGIS 10.1.1 release: tile rendering, user interaction, etc will not function if any form of animation is occurring in UIKit. It appears to be running on a thread that UIKit/Core Animation blocks during animations.
Any fixes proposed? Place to file a bug report? This also seems to prevent using a UITableView to select items on the map (as the tableview is set to try and center the selected item, causing an animation).
Thanks.
Edit: I would also like to note that this didn't occur in the previous SDK version.