Hey there!
I hope you can help me. This happened to me for several times in the past. At some point it sometimes happens that some of the sketches are no longer “visible”. It looks like they are still there, because all spline control pointes are there, but somehow they are not. So far, I’ve always been able to quickly redraw them, so that wasn’t a problem. But it is a bit more complex and I would like to have them back. Now I do not know if this is “normal behavior” or a bug? 
What’s going on here?
Thanks.
