Furniture libraries missing in "About Sweet Home 3D"

[z56oo]

I just noticed that the furniture libraries that are not "user created" (i.e Blend Swap, Contributions, Kator Legaz, LucaPresidente, Reallusion, Scopia, Trees, ...) no longer appear (as before) in "About SweetHome3D".

Is there a reason for this?
Why this regression (we no longer know which version we are using)?
And by the way where are they? (on my mac they were placed before in /Applications/Sweet Home 3D.app/Contents/Resources/furniture, now it’s all empty! and what’s weird is that the objects have not disappeared from the SH3D interface)

Does someone can bring me light,
thank you in advance.