Low-priority UI improvement.  This issue doesn't really block people from accomplishing tasks; it probably just increases your support tickets.

For people who wish they could upload their own external images as input into the inpainting feature, here is a minor UI improvement that could make it more obvious that this is already possible:

* move the red folder icon from the far right to the left of the inpainting icon, since uploading would be done at the beginning of the process, rather than the end

* change the color from red (which I interpret as deleting or removing) to any color other than red. even changing it to the current gray color could work fine, as long as the icon is moved to the far left.  my guess is the icon was changed to red because users never thought it might be an upload feature, as a result of its location on the far right

* while the current "open folder" icon is okay, a slightly better icon could be an up arrow for import, since the image is on our hard drive and not stored in "My Images" (which would correspond better to an Open Folder icon)

A bigger improvement would be to just let users drag the image that they want to upload into the inpainting feature and drop it directly onto the white square in the middle of the screen (similar to how the IMG TO IMG feature works)