Weird URL when using updateQueryString

Hi,

I use updateQueryString in my application.
When using it, the URL becomes strange, for instance
https://cerema-med.shinyapps.io/sesame-alpha/_w_9cec48d7/?page=choisir
instead of
https://cerema-med.shinyapps.io/sesame-alpha?page=choisir

Why is that ?
How to maintain a pretty URL ?