Facebook counter notification vanish

I'm using setCount to set the number of my Facebook app counter notification.

For example, I run setCount with count = 33 and then my facebook page immediately changes and looks like this:

But, when refreshing facebook.com, the 33 is vanished and I got:

Using getCount I can see that my counter is still at 33, but the number 33 is vanished from my facebook page.

Is this a Facebook bug? Any ideas what could be happenning?

I tried this to Chromium, Opera and Firefox. But I got the same results:

using setCount the counter appears, but with just one refresh t开发者_开发知识库he counter vanish

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That counter is maintained based on the number of active requests to a user from the application (Facebook Social Channels). After a short period of time the actual number of requests is requeried and the true value updated.