I am trying to make app link work via facebook browser on iOS.

I have this header on web page:

<meta property="al:ios:url" content="applink://parameter" />

The page is deployed onto, let’s say, https://www.foo.bar/test
When I open this link via fb app browser (e.g from comments section), my app opens as expected, but deeplink does not contain parameter

However if I open link https://www.foo.bar/test.html, app correctly receieves full deeplink.

Any tips how to tackle the problem? It doesn’t make any sense, the web page is the same, only link has an extension.