Can the people who live in this maze get lost in their own maze in Tomb of Annihilation?


I hope the title isn’t so ambiguous such that it doesn’t actually resemble what I’m asking, but I’m trying to keep the title spoiler free.

So, in the Tomb of Annihilation adventure for D&D 5e, there is a location in Chult called Dungrunglung (pp. 49-52). This location includes a maze.

So, the moment the party step into the maze (which surrounds the grung settlement of Dungrunglung), the grungs "greet" them immediately and escort them to the centre, which of course means they are going through the maze with the party. On page 49, it has this to say about the maze itself, and what one may expect whilst trying to navigate it:

The maze’s passages are open to the sky and magically change configuration every minute or so, turning passageways into dead ends, and vice versa. Whichever character is leading the way through the maze must make six successful DC 15 Wisdom (Survival) checks to find the entrance to the settlement (area 2). Each successful or failed check represents 1 minute of searching the maze.

This, to me, implies that the grungs themselves can get lost in their own maze (and after apparently having just travelled through it already to greet the party). Is this true?

Is there anything that I’ve missed that might imply that, while being guided through the maze by the grungs, the (escorted) party and grungs do not get lost? Or do the party or the grungs still need to make Survival checks, potentially getting lost?