Collapse adds default view text on top of current view

[GMailley]

I'm trying to get the hang of this library, and I am trying to implement a recycler view with expandable cards.

It looks as expected before expanding and after expanding, but when I collapse, it seems to get the default text of my view and place it on top of the text that is already there. Is this intended and I should remove the default text, or is something going wrong?

[HectorFGarcia]

The same thing is happening to me.