Incorrect tab order on new portals

Not fixed in 7.3.3 build 95

Test Case..
in latest 7.3.3 build log in as Host
Go Host > Site Management
Create a Parent or Child portal
Using SMSS connect to the database of the site
click "New Query" button

Use <database name here>
Select * from dbo.Tabs where PortalID=0

Open a 2nd new query window
Use <database name here>
Select * from dbo.Tabs where PortalID=<new parent/child portal ID>

Actual Result:
In Platform the tab id's of the new parent/child portal are in numerical ordering of Portal 0 (zero)
In Content they don't numerically follow Portal 0 (zero) but they aren't starting from 1 (one) either

Expected Result:
Any parent/child portal tab id's would start from 1 (one)

SCREEN CAST: http://screencast.com/t/0HZqqBcyHBg

TabId will NEVER start at 1 for new portals. This is the PK of the table. The fix was for reseting the TabOrder to 1 on new portals.
Before taborder started at MAX+1 for all portals, which was not correct. Taborder should start at 1 for all new portals.

See latest comment from Vicenc

taborder should start at 1 for each parent page, not portal

Now it is good.
TabOrder always starts from "1" by Portal.

Please be aware of there is a bug noticed: DNN-5899, about portal creation, not sure if they are related.

Noticed a potential performance issue during portal creation:

• When create a new template, purposely check off all pages with TabOrder = 1.
  The generation of the portal takes longer time.