This does not have a practical benefit, but the players continue to enjoy it.
Paimon, the protagonist of Genshin Impact, can only be described as a companion informally: she appears only in cutscenes; this is the only update that makes Paimon a real companion.
Paimon may lag behind their characters from time to time (for example, if she falls from a cliff), but she will quickly overtake the character.
YouTuber Mockermay explains the principle of glitch activation. The error is detected before the start of the event, and for it to be activated you will need a friend to join you in cooperative mode.
The player must jump on Paimon while simultaneously opening the menu after teleporting to a given location. If everything is done correctly, then Paimon will follow the character all the time.
If the player teleports or restarts the Paimon menu, there is a nuance. However, you may withdraw from the cooperative immediately.
Although such a function may be ineffective from a mechanical standpoint, the followers are still quite ecstatic that Paimon continues to follow them. This feature appears to be recommended by the developers.
This is an interesting story.