When travelling through nether portals occasionally you get teleported to the wrong location

When going through a portal in the nether at approximately 8000, ~, -8000 I end up at the same co-ordinates yet in the overworld. This still happens even though the original portal is correctly linked to one at approximately 64000, ~, -64000. 

 

**There is no video or images of this occurring as Jira does not allow me to attach them.