Hi Simon

I have noticed slight quirk, not sure if it is a user error or a bug but...

I installed the block slide

created some articles, then populated them with block of content. I then applied the block slider to 1 or 3 articles. For a while I was unsure why it was not working, when I looked into it I noticed that the "is optional" setting for all articles, blocks and components was set to "False".

Now I have the course progress plugin installed, I'm not sure if this is globally setting this status, however, I went through and manually set "is optional" to "true" for everything and it is now functioning at desired.

Hope that helps.

Nick