Question on Twistbox

Hi fellows，

I didnot play with Twistbox too much before and I didnot notice whether or not this is his normal behavior? I just found that I cant implement baking on both of the Twistbox param and the eight-point TwistBox component .Beside this, there is no shaded/ghosted preview for Twistbox either unless they are baked manually and then referred to a Geo Param .Is this normal? If so, explain sth please.See picture attached.

BTW, I just found that I cant use the alt+drag way to copy a ScribbleNote component~And I wish I could do this in future!!Thanks.