I usually have PSPad running on the left half of my main screen, and without a horizontal split. Since writing my previous message, I expanded PSPad to full screen and used the horizontal split for a small edit, and the marker and icon behaved normally. Reverting to the half screen with no split, the problem comes back.
-- <https://forum.pspad.com/read.php?4,73798,74520> PSPad freeware editor https://www.pspad.com
