It is not pinned. The sidebar displays within the speeddial and takes up much needed space.
As it always did since it was introduced. If you want a different behavior, you can ask for it in Suggestions Box.
Again, un-checking does not REMOVE the apps!
I guess they are. I remember it have been discussed in the Desktop Team Blog.
Anyway, it would also be something to Suggestions Box.>
Also, STOP renaming my thread topic. The thread topic is relevant to the version of opera.
I will change any topic title every time I think it's necessary. End of discussion.