Not all query parameters appearing in url object in embedded Retool app

I'm embedding a Retool app inside my React frontend using a one-time-use embedded URL. I am then appending some search params on the url like this

https://my-retool-instance.com/embedded/authed/<uuid>/firstPage?input1=hello&input2=world

In my app I am displaying the url.searchParams object for visibility

this only contains

{"0":"searchParams","1":{"input1":"hello"}}

Are my params incorrectly formatted or is this a bug on your end?