In Piwik 1.8.4 the Widget "Visits Overview (with Graph)" does not show the percentages correctly (see attached image).
The % displayed on this screenshot looks correct to me?
Same in 1.9. I don't have a single day where the bounce rate was below 80% - how can it be that it shows "0% of your visits have bounced" and "0s average visit duration"?
Sorry I was looking at graph but sparkline is wrong!
Can you reproduce this on the demo.piwik.org ? do you see it in all your website in piwik ? all dates ? can you see any common point between dates with the data issue?
Halfdan, please try to remove and readd the Overview with graph widget.
@peterb, thanks, that solved the problem. Any idea why it happened? I added the widget in Piwik 1.8.4.
That's a tricky one indeed, there is probably an underlying bug (we can reopen if we find out)