Not sure if this is a bug or by design, it looks like a bug. Visits numbering is inaccurate in the Visitor Profile modal popup.
Here's an example:
First visit should be #1, second visit #2, and so on. Right now that's not how it's numbered, so it's a bit confusing at first glance. I believe it's been there before, but I never really paid attention to it until now.
Version: Piwik 3.0.5-b2
This will be fixed in https://github.com/piwik/piwik/pull/11579
and is duplicate of https://github.com/piwik/piwik/issues/8491