Cannot rotate view while using Samsung Dex - Acrobat Reader

I'm using Samsung Note 8, with the Samsung Dex.

Of course, when I have my phone undocked, I can rotate my phone and thus rotate the view. 

However, when I am docked to the Samsung Dex and presenting on a large fixed screen, there is no option to allow the view to be rotated.  The app (Adobe Acrobat Reader version 18.2.0.182935) does not seem to have an option to rotate the view.

It is quite embarressing to have a conference room full of people to need to rotate their heads to understand a drawing I am trying to present.

Is the functionality there, but I just have not found it yet?

If not, will Adobe add this feature in a future build?

Thanks.