The event title for events spanning over multiple days is repeated for each day. This clutters the UI and makes it harder to distinguish events each other. See attached screenshots. Note that I've checked bug 199732 and this does not look like a duplicate.
Created attachment 243016 [details] Event title repeated for each day This is how it looks like in Mozilla Calendar/Sunbird/Lightning.
Created attachment 243017 [details] Google Calendar has the solution :) Google Calendar's solution spans the text over the days and uses arrows to indicate that the event continues outside the view scope. Much more elegant and less confusing.
Looks like a duplicate of Bug 256588 to me.
*** This bug has been marked as a duplicate of 256588 ***