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1 px line on top of every image pasted from paint.net

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That's a very odd bug. When I select an image from paint.net selection tool then copy it on firefox on whatsapp web or google docs, there's a 1 pixel line on top of the image. The line gets literally incorporated into the image. If I download the image, the black line is on top of it replacing the first row of pixels.

This does not occur on Edge, and it also does not occur when I try to paste something from other image editor, like mspaint. Firefox version is 122.0 and paint.net is 5.0.12. This bug just won't occur if I don't use firefox or paint.net, and it only occurs when both are present.

That's a very odd bug. When I select an image from paint.net selection tool then copy it on firefox on whatsapp web or google docs, there's a 1 pixel line on top of the image. The line gets literally incorporated into the image. If I download the image, the black line is on top of it replacing the first row of pixels. This does not occur on Edge, and it also does not occur when I try to paste something from other image editor, like mspaint. Firefox version is 122.0 and paint.net is 5.0.12. This bug just won't occur if I don't use firefox or paint.net, and it only occurs when both are present.
Attached screenshots

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Modified by mpalmeira.rocha

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