In this link:
https://hig.kde.org/style/writing/labels.html
Under the
https://hig.kde.org/style/writing/labels.html#using-ellipses-in-labels
We need to add a new line explaining a rule to use ellipsis. The rule would be:
"If your menu item opens a new dialog or window and is not considered in the list below, use an ellipsis"