[SOLVED] Removing 'ant' border left behind from text window?

[Blighty]

(11-23-2018, 03:26 PM)OurJud Wrote: Initially the 'Layer to image size' appeared to be the best solution, but while I can then use pencils and brushes on my file, I still can't use the eraser. At a push I can simply switch to white and paint over what I need deleting, but it's an irritation.

I suspect that you are trying to work on the wrong layer. In the Layers Dialogue, make sure the correct layer is selected.