Guild Wars 2

The bug does not have any triggers that starts it, it has been with my player for as long as I created them.

Whenever I enter into a new map or story line, and even when I die and revive at a waypoint, my 1st pet resets back to the pet I chose at the start during character creation

Have you tried a -repair of the client, in case of corrupted file(s)? Instructions found via the ‘Support’ link above/below and ‘Search – Repair’.

Good luck.