[Question] Why user data is not present when app is opened via inline search button?

[player21o]

So my bot answers inline queries with a button that is configured to open an app. However, the user data is not passed in it, unlike when opening the app through an inline keyboard button. And I was just wondering: what is the reasoning behind it?
As a workaround, I'm forced to create 'tokens' and store them in database, which get fed to the app url of the inline request button to identify the user. Is there another way?