Because you didn't do a recursive clone and hence the submodules were missing.
Thanks for the explanation. I downloaded it via internet browser - I didn't know about recursive clone before. Using "git clone --recursive" I have got all.
What is the font you're using in C::B?
I am using: Settings -> Editor -> General Settings -> Font: "Courier New - Normal - 10"
I also have some kind of zoom to see more lines in the editor - I don't know the zoom factor. But I know, that it is the same as in C::B 17.12 where the troubles aren't. If it has some influence.