Clone stamp / patch tool / content aware fill all leave remnant
Attempting to evict this branch on left I can use one of the aforementioned processes which normally all work fine. But no matter what process I use, there is a faint white silhouette of the lightest part of the branch using any/all of them.
Red arrow pointing to branch to be removed:

Red arrows pointing to remnant

I have closed and re-opened PS to no avail. I have tried cloning onto another layer, etc and same thing.
Ideas?
Photoshop CC v 21.2.2
