PX4 Analysis

Hello, dear community.
I am using a T265 tracking camera to fly the drone indoors and outdoors GPS denied.
I am using an onboard computer to control the PX4 through mavros.
while flying inside a room with good illumination the drone works fine, but yesterday I tried to fly it outside in a soccer field with the reflectors of the field on but the drone takeoff and went up more than 10 meters (the python script set max altitude to 2m) I tried to abort the mission and I do not know what happened but the drone went up again to 11 m and I lose the connection which caused the drone hit the ground in other position outside the soccer field.

Here is the log that PX4 registered.