This is meant as an automatic run off to avoid expense of runoffs . This not bad as California combined primary which was designed to lock out GOP from general election in many races.
Maine didn’t have run off elections for state wide offices prior to ranked choice voting. Whoever got the most votes on election day got elected. This was done so good Governor’s like Paul LePage who got less than 50% of the vote in a three way race wouldn’t get elected ever again.