[danphilibin]

I have this problem too. I've been searching for others having the same issue for forever and this is the first time I've seen any mention of it. I submitted feedback to Apple with a screen recording but nothing ever came of that.

It seems like it has something to do with the cadence of when I press the return key while it's loading suggestions into the autocomplete dropdown. It's almost as if pressing return is selecting an item that isn't in the dropdown list yet. If I paste a URL and wait a second or two I never have that problem. It's when I'm moving quickly that I frequently run into it.