Vehicle Flies away on commanding a height change. Problem with LPE height estimation?

While running a mission on snapdragon flight using waypoint navigation, while changing height the vehicle continued rising in altitude and was only stopped after it crashed into the roof. I don’t know whats wrong but it seems to be a problem with the LPE estimator ?

the ulug file can be downloaded from here: https://drive.google.com/file/d/1-rK93bMoei-KgVOTqL_s4-xno4rdhUng/view?usp=sharing