Right now, we just display a line which is really hard to grab or click as well as not imnormative.
The bugspam monkeys have struck again. They are currently chewing on default assignees for Calendar. Be afraid for your sanity!
It is not just in multiday view. I switched to Day View and I still could not click on the meeting. Even though it was thick enough that I should have been able. Of course, I also discovered that I had somehow created one meeting from 12:15 to 12:15 and a second meeting from 12:15 to 12:15. I am not sure what a click should do in this case.
Even though this bug is older, the other bug already has the blocking flags for 0.7