How do you deselect a selection to get rid of the marching ants?
The Photoshop methods don't work and often the 'unselect all' function under 'edit' in GIMP is greyed out and yet the ants keep marching on!
I am using GIMP 2.6.2, but it should be similar with other recent versions.
This will unselect the floating selection
do you want eliminate the marching ants or the selection ?
Wiew_show selection may toggle in out visibibility of marching ants
Select /none eliminate the selection
If greyed out, or there is not any selection or you may have a "floating selection" then do NOT anchor but add a new layer
(anchor will merge down, you may not like it )
But is easy confuse selection border will layer border, if you see the contour but nt marching ants is something else
To fix that View/ layer bonduary
You have to anchor the floating selection. Control-H