User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0
Steps to reproduce:
To reproduce this issue visit www.wsp.com in latest firefox browser; the website page loads and viewport stays in footer. Open same page in any other browser Chrome, Edge, Safari (mac) they stay on top during 1st load. I have attached screenshot of webpage footer area that is shown on page load - problem users are facing in firefox. Also, uploaded the demo video of issue on youtube - https://youtu.be/3dKmzBGu3_0
When www.wsp.com webpage is opened in firefox it scrolls down and stays in footer, user needs to scroll up to see the navigation section of page.
The site page should stay at top, it should not scroll down or stay at footer area during initial page load. There is no script written on page to make the page scroll down, firefox is picking up some thing in page that is causing it to show site footer immediately; but this does not happen with other popular browsers