Public bug reported:

When scrolling using a pointing stick (at least with trackpoints on Thinkpads) 
Evince will continue to scroll when the window or workspace is changed. The 
user's place is quickly lost.

To reproduce:

Open a multi-page pdf with Evince.
Go to some random page.
Scroll up.
Hit alt-tab quickly, switching to another program.
The page will continue to scroll.

Note that the page scrolls depending on where the mouse is on screen.
This continues even if the workspace is changed or the user switches to
other windows, even clicking and typing in them. The only way to stop
Evince from scrolling is to go back to Evince and click or scroll again.

This might be reproducible with a mouse and scroll button, but I don't
have one handy. I can't, however, get it to reproduce when scrolling
with keys or the touchpad. Switching windows also needs to happen
quickly, otherwise it does not occur.

I've tested this on two different Thinkpads running Ubuntu 16.04 and
Evince 3.18.2. This only occurs in Evince, no other program I've ever
used. It didn't occur back in 14.04.

** Affects: evince (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1650076

Title:
  Evince continues to scroll when window/workspace changed

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