A lot of users reported us that their widgets are disappearing from their home screen each time we update the application on the Play Store.
We took some time to investigate about this issue because we feared that we made a mistake somewhere.
Here is the result of our investigation.
The widgets disappear only on Touchwiz launcher. If you install another launcher, they will stay after an app update.
Other paid apps are also affected by this issue. We were able to reproduce the same behavior with some other apps.
We are really sorry for the inconvenience, but there is nothing we can do on our side to avoid this.
EDIT : it seems some Sony phones are impacted too (like Z1).