(Not a bug but may get reported as one) United States is now the first country in the dropdown/picker list
(Confirmed in Herbarium... unknown if other projects affected.)
A small but significant (and requested) change appears to have been implemented: United States is now the first country in the dropdown pick list, so typing "U" or down-arrow is all that is required to select it.
As the U.S. is the country in about 90%+ of the records, this is a requested change which makes entry faster... not a bug! 😃