Because the deeplink module is being deprecated, I was looking to switch to the native functionality. We use an oauth flow with an external application to integrate with Mendix. With deeplink, this works (the user also remained logged in).
Now I tried to create a page, use a nano flow with JS actions to read the query string (as this seems not possible in microflows) which in its turn calls the microflow again with the parameters based on the query string.
Unfortunately, the application is logged out after redirecting back now, which never happened with deeplink module.
It would be nice for query string support to be added for this use case or others (like web hooks from third party) where you don't have control how the Mendix url is called. Additionally, the user session should remain active.