Evidence for Avatar swapping Glitch

At two different points in Jumanji – The Next Level, the characters come across glowing green water that allows them to switch Avatars.

Several entries on the TVTropes page state that this is hinted at being a glitch due to the broken machine rather than an intended feature.

Game-Breaking Bug: In-Universe; it’s heavily implied that the water that allows the characters to switch bodies is a result of the game being broken and not an actual feature, and it quickly comes in handy during the climax.

New Rules as the Plot Demands: Jumanji now has an entirely new landscape to explore, new villains, new player characters (along with the ability to accomodate more than five players), and a function to let players change their avatar during a game in progress. Justified due to its magic and the fact it’s broken and implied to be glitching; that last new feature is even hinted to be such a glitch and probably not intended by the game.

Wrong Genre Savvy: Shelly and Ruby immediately suspect that the green, electrically-charged water surrounding the Jumanji Fruit contains some horrible peril. Turns out, it’s just a bug of the game that allows them to swap avatars.

Having watch the film I completely missed these hints, and it looked to me like the functionality was intended the glowing water being a colour-coded hint. Can anyone fill me in on the hints that suggest Avatar swapping is a bug not a feature of The Next Level?