Google has changed its behavior for me recently. Now, if I search, then change the search term and search again, my earlier search term gets added to my new one. I have to navigate away from the site and back again to search on a new term without including the previous one.
For example I do a search on “butterfly”.
Then I delete “butterfly” and put “moth” in the search field and search again.
The result I get says it is for “butterfly moth”, and appears to be.
Could it be me? Or is this now expected behavior? My co-workers looking over my shoulder are baffled.