bug iphone 8 back


in my application I load the categories of my wordpress, then click, a view with the articles of the category.
The problem is that on Iphone 8, when I click the back button and I return to the list of categories, it displays the name of the last category consulted for all categories listed.
And no idea of ​​how to solve this problem since on the simulator everything works fine.

Ideas ?

Thank you