Pages jump back to the top when i’m scrolling down on mobile

Hi,
For an unknown reason, some pages jump back to the top when i’m scrolling down on mobile (if I scroll down right after the page has loaded)

You can see the problem on this page for example (on mobile) –

What can I do to fix that? (Yesterday I switched from Jnews theme to Astra theme, and deleted Elementor [which most of the site built using Elementor…] I guess that has something to do with this..)
Thanks ??

• This topic was modified 2 years, 3 months ago by avscor.
• This topic was modified 2 years, 3 months ago by avscor.
• This topic was modified 2 years, 3 months ago by James Huff. Reason: link moved to proper field
• This topic was modified 2 years, 3 months ago by James Huff.

The page I need help with: [log in to see the link]