I wish repeating events were shown in the upcoming events feed/block. At the moment only the first occurrence of the event is shown but not the others. 

That’s because only one event actually exists. You will have the same “issue” if you want to delete one date of this repeated event; you can’t. At least you couldn’t in 4.3.6; I haven’t tested in 4.4.X.

I have just seen, that if I add a comment to the ONE event then this comment is automatically attached to every event. It does not make sense if the comment is related to only one occurrence. 😞