fill area has a border..

[Studoc64]

Hoping this is the most basic of questions with a quick referal to an answer...

I have imported an image, with a view to making some mods to it's content. 

To this end I have created another layer and employed a rectangle select, to enclose an area I would like to modify..

I have then used the colour picker to copy the colour of the image around this area and applied the fill bucket to essentially paint over some information that sat with the rectangular area, in the original image.

Happy days...

Now when exporting the image I find a feint border to the rectangle... Not what I was looking for...

There are many variables within the fill bucket tool, I am flying blind, but no alterations to these variables change the result...

How do I get rid of that border...?

Thanks,

Stuart

   

[rich2005]

I can not reproduce that.
A rectangular select is quite safe when it comes to defined edges, (1) Bucket fill, with settings shown (2)

   

Is your image indexed color or RGB ?

There is a tiny break in the border - bottom right - maybe something else going on. A full screenshot  would help include showing layers