overview is added to URL

Firefox 160 seems a bit random. Any reason you are in between versions?

If you haven't already, I would try clearing the web content cache in case a redirect has been retained in there. The following article has the steps: How to clear the Firefox cache.

If the redirect isn't cached, and you're not being selecting it on the address bar drop-down, is it autofilling inside the address bar? By default, in-URL-bar autofill doesn't add anything beyond the third /, but there is a setting in about:config that could cause a fuller URL to appear (in case you might have modified any settings in there). In that case, you may want to open the Library window (Ctrl+Shift+H) and remove the invalid URL from your history.

I thank you JSCher2000 but your solutions didn't help. I tried this morning to open theBank page and again "/overview" was added to the url.

Same thing happens to me sometimes. I think the bank’s site just redirects you to “/overview” after you land on the page, so it may not be anything you’re doing wrong. Have you tried a different browser or a private window? If it still adds it, I’d contact the bank’s support and tell them exactly what you’re seeing.