[bug]: 1px wide lines left when deleting a part of the image on the Universal Canvas

[Barafu]

Is there an existing issue for this?

• [X] I have searched the existing issues

OS

Windows

GPU

cuda

VRAM

8

What happened?

After doing a specific sequence of actions, after removing a part of image on the canvas, its outline gets left behind and is saved when exporting.

Steps to reproduce

1. Clear canvas, clear canvas history and temp images too. Set "number of images to create" to 1.
2. Drag a 512*512 image to the canvas from the gallery on the right.
3. Move tool square 256 px down and 256 px left. Run outpaint. Accept.
4. Resize move tool to 256*256 by dragging its top left corner in.
5. Move tool 256 px to the right. Now it should look exactly like the screenshot provided.
6. Press invoke to create an image for empty spot. Accept.
7. Immediately press Del to delete the last part of the image.
8. Send image to gallery and go to gallery viewer. Or send it to clipboard and open in editor. Observe the error lines in the bottom right corner of the image.

Screenshots

In the process:

The result with bug:

A much worse example after cutting vigorously:

Additional context

No response

Contact Details

No response