Ever since I started using App Groups to share Core Data between my App and a Today Extension/Widget I am having an issue. When I delete my app the core data maintains on the device, instead of being deleted like it used to.
I am aware this question has been asked before: Uninstalling app not delete app group data .Do I have to remove app group container and it's content manually?
The answer says it was a bug and Apple fixed it. I however still have the problem with iOS 9.2
How can I make sure that removing my app also removes the Core Data?
So in the end, I figured it out. A very old version of the app(Made with a different framework) was still installed on the test device, which happened to have the same App group.