Market Share shows up as 0%, but should be 100%

[Arcanum]

ID: Airport ID: 215 (Narsarsuaq - UAK/BGBW)
Type: Market Share Calculation
Airline Details: Freedom Air ICELAND - ID 33390 [Public World 1110]
Description:
On the the page you go to after entering a world, there is a "World Info - At a Glance" section that shows the percent market share in several airports.  One of my hubs, Narsarsuaq*, shows up as 0% for me, even though I actually have 100%.  This also occurs on the Operations page.
*Narsarsuaq has zero passengers per year according the airport page

[Japanair]

If you just created that base/route, then it will not show up in the Airport page immediately. You need to logout and log in again in order to see your market share.

[Arcanum]

I thought that might have been the problem, but I actually created the base yesterday, and have logged in several times today.  The market share shows up correctly on the airport's page.

[StephenM]

Are you the only operator at the airport?

If it has 0 passengers and a low airport ID (Less than 1000 lets say) then it was someone hassling me years ago to put it in so they could get from Europe to the US with a prop.

[Arcanum]

Yes, I am the only operator at the airport.

[MrOrange]

Oh, yeah, that happens sometimes (read: every time you have a 100% market share in a base airport).

[steex]

Another addition to this issue.  I am operating an airline in Private World 1273 with my only hub at OSL, which is the only hub of another airline as well.  Though the airport info page shows I have 40%+ of the market, my World Info homepage shows 0.0%.  My airline ID is 29329.