Repaint issue when zooming out from right edge

[Don McComb]

1. Open an image. My image was 653x512 pixels on a 1366x768 display.
2. Zoom in. I zoomed to 500%.
3. Scroll to the very right edge of the image.
4. Start clicking the toolbar zoom minus button while observing the screen. The right hand side of the canvas does not repaint correctly.

Issue found with latest code in Ubuntu 12.10.

[Cameron White (cameronwhite91)]

Maybe this is related to bug #850310?

[grofaty (grofaty)]

Don, can you please attach the print screen of canvas display when it get corrupted, to see if this is the same bug as Cam noted in #1.

[Don McComb (don-mccomb)]

Hi guys, It does look similar to the image shown in bug #850310. Bug #850310 stated that the problem only occurred in Windows. This is occurring in Ubuntu 12.10. I will attach a screenshot.

To create the screenshot, I:
1) Opened a screenshot of the Firefox Preferences window.
2) Zoomed to 500%.
3) Scrolled to the far-right.
4) Clicked the "-" button on the toolbar to zoom out 3 times to 200%.

Are you guys able to reproduce this problem? Or is it something specific with my setup?

[Cameron White (cameronwhite91)]

I can reproduce this issue as well on Ubuntu 12.10

[grofaty (grofaty)]

I have also tested latest Pinta development on Ubuntu 12.04 and I can confirm the problem.

Also tested on Pinta-1.5-preview-20121121 on Windows XP and can NOT reproduce the problem.
So it looks like Linux only problem or some kind of regression.