see bug: [Bug 553534] centering issues after image scaling and setting zoom to 100%

Martin's comment 13 says in part: >Regarding your second point, I think that behavior might have been introduced
>when zooming out didn't center the image if the image fits in the viewport.
>Since it does that now, it might be reasonable to change that back. Please ask
>for feedback on the gimp-developer mailing list regarding this. If it turns out
>people like to focus on the image under the cursor even when the cursor is >outside the image window, we can change this back.

With Preferences - Image Windows - Zoom+Resize set to: Resize window on Zoom=OFF
Resize window on image size change=OFF Initial zoom ration: Fit to window

And an image currently displayed fully in the window (ie. press Ctrl+Shift+E)
Invoke Zoom tool, press Ctrl+Click five times and image gets smaller and smaller and "disappears" upper left. see 15 second video here: http://screencast.com/t/6gFRuN0yn

Not shown in video, but with mouse in same (upper left quadrant) position, click (not ctr l+click) five times and image starts "growing" and starts "disappearing" lower right.

I'm not sure *what* the behavior *should be* here but current behavior doesn't seem right?

I would expect that whatever the desired behavior is, it s/b symmetric ie. at some point sequence of ctr l+click(s) followed by click(s) would return window to image being displayed, centered.

Note - even when the image has been greatly reduced and vanished upper-left a click in the zoom widget (lower right) re-centers it in the main display so that's GOOD.

There is discussion in the bug-report about patches but I'm not sure whether current SVN behavior is still as per what I see (or if its even related)