Scrollbars don't behave properly (completely unusable) if content is slow to render

Open a file that takes a lot of memory and/or is cpu-intensive to render, such as a huge SVG file with a lot of stuff.

Zoom in so that the document is significantly bigger than the window

Compare these two cases:

1) (works as expected) Click somewhere and drag to somewhere else, to move the document relative to the window

2) (BROKEN) Drag the vertical or horizontal scrollbar to scroll the document vertically or horizontally

Expected: in both cases, after you're done moving, the program will take its time to render the new visible portion of the document and when it's done you'll see the document at the position where you have moved. The distance the document should have moved should be exactly equal to the distance the mouse cursor have moved while dragging.

Observed: case (1) works as expected. But in case 2, the scrollbar will only move a very little bit and the document will only scroll a little bit. The scrollbar won't ever reach the point where the mouse cursor is, not even closely.

Scrollbars just can't be used to navigate in a document that is "costly" to draw.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: eog 3.10.2-0ubuntu5
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Jun 13 23:50:21 2014
InstallationDate: Installed on 2013-10-11 (245 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: eog
UpgradeStatus: Upgraded to trusty on 2014-05-24 (20 days ago)