Word 2016 hides the vertical scrollbar after a few seconds of inactivity. As soon as I move the mouse cursor it appears again but it disappears again after a moment. When it's hidden I can't see how long the document is and which position I'm looking at. Must be one of those modern stupid "desktop is not a touch-only tablet" design mistakes creeping in from entirely different platforms.
I know there is an option to permanently hide the vertical or horizontal scollbar but this is not the case here. The vertical scrollbar is visible but not permanently.
This issue did not exist in Word 2010. I don't know Word 2013 so I can't say anything about that but it seems to be a similar issue from what I've found.
PS: I'm also looking for a permanent solution, not one that only lasts until the Word application is closed.
Update: Please go vote for this bugfix here on uservoice, as noted in the comments.