I was wondering about this as well. In theory, there are also some metals and compounds that react with each other with just simple contact which result in some kind of amalgamation which can result in disastrous structural loss. Veratassium recently did a video on this kind of effect[1]. Could this be happening here?

[1]: https://youtu.be/ksn5yrsC3Wg

Are you referring to galvanic corrosion? That's well understood and I'd hope not an issue in spacecraft manufacturing.