Destroy markers when they leave the map

Some uneducated players move markers out of the map instead of CTRL+SHIFT+right click. What if they are automatically destroyed when they leave the map or after several minutes?

If the marker is still visible for you and confused you, then delete it yourself
Otherwise except when using space to tilt the camera a lot the markers shouldn't bother you at all once they were moved as far out as possible.

Personally I'm the type who deletes any markers after a short time periode cuz they're annoying, so far noone complained about it lol.

I think automatically deleting them might not be a good idea, since people might actually put markers outside the map as notes or something.
So without a good reason to I wouldn't auto delete them.

Thought this (markers showing up off map) was a bug tbh.