[Gooserider]

This was more a manufacturer mistake than an user error, even if in this case both were the same

Sort of true, although it's a fairly safe bet that unless you signed up to be a beta tester, material failures would have been eliminated...

However your failure does illustrate an important point, namely the need to ensure that any adhesives or sealants are suitable for the application. It isn't enough to just say 'Water Resistant' or even 'Water Proof', the product needs to either specifically mention the application or at least say 'suitable for constant immersion'. There are lots of 'Water Proof' glues that are intended only for intermittent exposure, and will fail if left to soak for extended periods.

Gooserider