Why is this arrow, a line, or an orange area originating from "My position" on map?

Quick answer: 

1. An Orange Arrow

You have set a Navigation Target that is outside the visible map area
An orange arrow from "My position" points to that Navigation target:

2. An Orange Area

This orange area is called the Scent Trail and it shows the wind direction relative to your location -> "My position"

If the actual wind direction is different from that shown by the Scent Trail, it's not necessarily an error in the App

3. The Straight Line that originates from your location

This is a Measurement Line from your location -> "My position" to the cursor position on the map

More information:

Here's how to get the above mentioned objects out of the map view:

An Orange arrow - "Navigation marker"
- Open the left side menu  -> "This position..." -> "Cancel navigation"

An Orange area - "Scent trail" (wind direction)
- Open the right side menu -> Tap the name of the "My position" -> "Scent trail" -> Tap the slider to gray

The Straight line - "Measurement line"
- Open the left side menu -> "Settings" -> "Display" -> "Show measurement lines" -> Tap the slider to gray

You can also contact Tracker Support or send us a Support request if you encounter some unexpected problems or error messages etc. so that we can give you more detailed instructions