It's not a markers of shadow but I improved coloring and rendering artificial satellites (include their labels) in the Earth shadows for both modes.
A tentative fix has been committed as revision 7709 of the trunk branch of Stellarium's Bazaar repository at Launchpad: http://bazaar.launchpad.net/~stellarium/stellarium/trunk/revision/7709
It's not a markers of shadow but I improved coloring and rendering artificial satellites (include their labels) in the Earth shadows for both modes.
A tentative fix has been committed as revision 7709 of the trunk branch of Stellarium's Bazaar repository at Launchpad: http:// bazaar. launchpad. net/~stellarium /stellarium/ trunk/revision/ 7709