When questing with family friends we like to mark each other to keep track of each other in crowded areas and when doing dungeons most groups mark the tank. Lately whenever we mark someone the icon disappears on its own, the “Target icons” chat log shows the icon being set by a player, but does not show anyone removing it.
We tried disabling all addons to see if it was an addon issue, but the issue still occurs.
On my son’s demon hunter, just double jumping seems to cause icons to disappear.
This is a really annoying issue, especially for questing where it can be hard to keep track of each other in a crowd.