latest firefox is continuously refreshing the page on a Website, both Windows11 and Linux versions. Website loaded ok previously and still loads ok using Chrome. Why?

Firefox version 152.0 : Firefox is continuously refreshing the page on a particular Website, in both Windows11 and Linux versions, making the site unusable ( unable to click anything ). The website loaded ok previously using Firefox and still loads ok using Chrome. Disabling extensions doesn't help, neither does deleting the cache and cookies. What changed and why? Is there anything else to try?