Your Homepoint is at: Lat. 39.585423 Lon. 3.378357 (WP8 in my screenshot)
When your Mavic Air-2 reaches WP7 the controlsignal is most likely (partially) blocked by the building at: Lat. 39.586563 Lon. 3.379030 (WP9 in my screenshot)
Have a look at this topic: