Talkback/Voiceover vs Cache

I’m developing an a11y application with multiple views. When I navigate in the views, the screen reader is reading the buttons (ion-nav-buttons) of previous pages. Inspecting the code, I could see that the “ion-header-bar” of the previous page is kept in the DOM with the attribute nav-bar=“cached”, while the active page presents the attribute nav-bar=“active”.
The problem is the screen reader is also getting the cached elements.
How to disable the cache in order to remove the “ion-header-bar” of the previous page from the DOM?
Or, how to avoid Talkback/Voiceover from reading this node?

Did you find the solution? I have the same problem