[abrookewood]

Because it feels like extortion. There was almost certainly no water damage caused by external factors: the user didn't spill anything on it and has literally no idea where the so-called water damage could have come from. I have heard anecdotally that this is their go-to for denying claims and it is difficult to argue against.

[kayodelycaon]

Humidity in the air can eventually trigger whatever they use to report wet damage.

[abrookewood]

Yes, that's what I've heard, which seems crazy.

[mozman]

It’s a hygroscopic sticker made by 3m.