Images not saving correctly (wrong size/position)

[Shahelion]

It saves the image very strangely, shoving it up in the upper-left corner and leaving the rest blank, plus it cuts off the bottom and top if it's too big. I have attached an example. The first is what it saved as, using the button. The second is a screenshot I took of the web page.

[kpierzynski]

I was able to reproduce this behavior on Firefox, try chromium based browser like Opera. I have no time to fix this project for now.