Problem
When you tap the outline menu for a PDF, it isn’t apparent where you currently are.
Expected
In the outline menu, bold or signify otherwise the current location of the current page. This is especially useful when you search to a position, then you want to understand the context of the tapped search result, according to its position in the outline. See pic.
Thank you for the suggestion. Noted.
Note: There is a control to show what page you’re on.
Tap the PDF page and the thumbnail list appears.
Just in case you weren’t aware. 
Got it and thanks @BLUEFROG. Sometimes while reading, it’s good to be able to see where the section you are in is in the context of all the other sections. For example:
Suppose I’m reading (better yet, searched to) the section labeled “Blue Frog” on the current page. I want to know where I am within the structure below, not just the page.
Funny example, but you get the idea. Page isn’t very rich with information, especially if you linked to the place or searched to it.
Noted and nice example!
No promises, but we’ll pass your comments on to the PDF framework developer.
