Losed scroll position on routes change

[GFdevelop]

When route change
ex: from /search to /videopage
the back button do not scroll to last position, the right behaviour is visible with
ex: from /videopage to /videopage

Step to reproduce:

1. search for videos
2. scroll down
3. open one video (you go on /videopage)
4. go back to previous page

Possible reason: dynamic elements are loaded after the page is visible, on static page this bug don't exist.