What is the URL of the page with the issue?
https://go.dev/
What is your user agent?
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:109.0) Gecko/20100101 Firefox/115.0
Screenshot

What did you do?
I just open the home page of go.dev.
What did you expect to see?
If the browser is Chrome, the menu at the top line is ok, see below:

I expect to see a normal page in Firefox.
What did you see instead?
If the browser is Firefox, the drop down arrow icon is not shown, why?
What is the URL of the page with the issue?
https://go.dev/
What is your user agent?
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:109.0) Gecko/20100101 Firefox/115.0
Screenshot
What did you do?
I just open the home page of go.dev.
What did you expect to see?
If the browser is Chrome, the menu at the top line is ok, see below:
I expect to see a normal page in Firefox.
What did you see instead?
If the browser is Firefox, the drop down arrow icon is not shown, why?