[Enhacement] Save app state: category name (fixes part of issue #4965) #5092
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Description (required)
Fixes the bug #4965 that If users view another app, then any work in progress in this app is lost
What changes did you make and why?
Saved category name of images when users leaving, and reloaded the category name of image when users return. After this change, user can see the app state is remain the same as they left and they can continue from where they left.
Tests performed (required)
The issue is about switching between common app and other app, unit test is not fit for this issue.