Area assignments: location markers end up on top of what's in the center of the area

[ziggabyte]

Description

When I zoom in and out on the map in the "Map" tab of the organizer facing part of an area assignment, in some zoom levels the markers for locations end up on top of the thing shown in the center of the area. this looks weird, as the markers feels like the are part of the "map world" and the stuff shown in the center are "floating" on top of the "map world" (this is my very non-scientific way of describing it, i hope you understand my reasoning)

Steps to reproduce

1. Create a canvass assignment/area assignment (depending on if the renaming has been merged yet heh)
2. Go to the "map" tab
3. Click on an area
4. Make sure there are some dots marking locations in the center of the area
   (if there are not:
   • assign Angela Davis to the area
   • Give the assignment a title
   • click "Start assignment" up in the right corner
   • in a new tab, go to "/my/home"
   • find the assignment in the list
   • go into the assignment
   • create some locations in the center of the area
   • go back to original tab)
5. In the info box that comes up, add an assignee to the area
6. See the little icon of the assignee appear in the center of the area
7. Now zoom in and out and look at the icon of the assignee

Expected Behaviour

The icon of the assignee stays on top of the location markers at all levels of zoom

Actual Behaviour

In some levels of zoom the location markers are rendered on top of the icon

Screenshots (if you have any)