API velocity graph point popup cannot be hidden

[foolip]

Steps to reproduce:

1. In an API velocity graph, click any point
2. Scroll to another graph and click that point
3. There are now two popups showing. Click outside to close the second of them.

The first popup now sits around, impossible to dismiss

[mdittmer]

Ah, I see. I think click-to-cancel is only bound to the graph where the popup originated.