Generative expand/fill leaving lines where the fill created a new part of the image

[SLM12]

Often when I use generative expand & fill to create a new part of my work, it leaves a line where the fill did its thing. I cannot figure out how to remove the line to create a smooth image. Instead it's obviously darker than whatever color my original image is, and leaves a line where I placed the box to create the fill. Any ideas how to fix/avoid this?

My example shows the vertical line on each side of the image where I used generative expand & fill. 

[Derek Cross]

Maybe use the Clone Stamp Tool with a soft brush to merge the join a little. Do it on a separate layer so it's none distructive, you can also experiment with the Opacity on the new layer (select Sample Current and Below).

[Nicoletta229217420tzt]

I have a similar issue, it started recently. I never had this issue in beta.. Check the photo I attached. I dont know why this is happening.

[authentic_delight3475]

I was also having same issue. What's helped me is using the lasso tool and making an uneven squiggly line when selecting my section to expand. 

[steves3167101]

That worked. Thank you!

[tristanboreale]

You save my life !

[Sharishan]

The last few weeks I've been having the same issue. The squiggly selection hack doesn't work for me, it just makes the transition line squiggly instead of straight.