I had the wall ties done a few years ago and now i see cracks appearing around the edge of the windows and door. Some are very faint while one is very noticeable. I know they isolated the old ties as i went around and seen their work. Is it just a matter of me filling the cracks and forgetting? The house was being rendered at the time so the ties were done when the render was hacked off.
Though the wall ties are now holding the two wall together, if the materials used in the construction expend and contract at different rates the ties may be causing some form of stress at certain points, this may result in Some minor cracks forming, these cracks shouldn't be cause for any real concern as the amount of movement is minimal.