If you mean an power bi app, you can click View and select "Off" in Selection pane and Bookmarks pane.
If you mean the third-party app, I would suggest you to refer to this demo.
Community Support Team _ Jimmy Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
What @upeshchavda means is that the new navigation pane in the app is not collapsable:
@upeshchavda , @copykai ,
This is a known issue now, please refer to this thread for fix info.
I am still certain that we are talking about two different things.
The thread you referred to is about the Visualization and fields pane to the right.
In this thread we would like the possibility to collapse the new navigation pane in apps to the left.
The previous and old navigation pane is collapsable. New one containing the reports pages isn't.
add ?collapseNavigation=true to the end of the URL. Was added back in 2015.
Thanks for your post.
However this does not solve our issue.
The ?collapseNavigation=true does not work on the new navigation pane introduced to Apps around spring 2019.
It works on the old navigation pane in dashboards, reports etc but not in the Apps where you have pages in the pane.
Sorry, I missed the image you provided. Can you collapse that navigation at all? I don't see any way to collapse it so I doubt there is a URL parameter that can do it either.
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