App shows old version of App icon after installing new version of App with new App icon

Question

I am facing very strange issue in iOS 7.1.1.

I had an App at Apple store with version 1.0 with different App icon than version 2.0. Now I have version 2.0 of the same App with different App icon.

Now if I don't have version 1.0 on device and download the version 2.0 of App then there is no issue at all.

But if I have older version 1.0 and I update the app from iTunes then I can see old app icon that was for 1.0 instead of version 2.0 . When I open the app and minimize the app by pressing home button at that time it shows old app icon for 0.5 seconds like a flash and replaced with new icon that is for version 2.0 .

Also if I delete the app and restall it then there is no issue !

I am not understanding whats going on why it shows old app icon ? I have all the App icon images in project for iOS 7.

Forgot to mention that app version 1.0 was developed by another software firm and I have transferred the version 1.0 into my developer account and I made version 2.0 of the same app with all new code and without old code reference.

But I think this doesn't make sense as I am having all new code for version 2.0 than version 1.0 . Still confused with this issue.

Any guide/suggestions will be helpful for me.

Thanks

Answer 1

The answer is also strange like Question.

I just restart the device and issue gone !!! I don't know why but its solved. I know this is not a solution I think its an iOS bug.