‘The Sun Never Sets’ Review: Dakota Fanning and Jake Johnson Split, Maybe, in Joe Swanberg’s Unsatisfying Romcom

Long past his sexually explicit enfant terrible mumblecore origins, writer-director Joe Swanberg continues his ongoing experiments in honoring the romantic comedy’s conventional satisfactions while expanding its sexual parameters with “The Sun Never Sets.” Wendy (Dakota Fanning) has been dating sedate single dad Jack (Swanberg regular Jake Johnson) for two years. When he decides they should…