Last Active show registration time.
When i visit some member profile under Member Information the Last Active time shows registration time but if i visit my profile time is updated.
I tried Update Users Statistic and Update Forums Statistic which fixed count of my posts but Last Active time is not fixed this issue i observed from Beta-4 maybe this is also a result of migration from bbPress not sure.
Ok, thank you for letting us know, this seems to be a bug. We'll fix this in next release.
This is not solved yet i have last version of wpForo.