Did all of it, with or without show sentences, the paste does not work. Usually this happens at the beginning of the lesson. I am sending the lessons url to support at the request of zoran. Stay tuned.
I have another lesson where it is impossible to copy a text line into the lesson where I need to add it. I will send you the lesson url and the article from which I am trying to copy 2 lines is:
The 2 lines are right below the weather chart, almost the last lines of the article.
Note. I noticed that whenever this occurs, the import program skips lines, it is directly after a picture. Also, these are the lines I cannot paste into the lesson. Apparantly this concerns more than just the copy paste. It also concerns the import.