I'm working with a Scala/Java hybrid project. When typing in my Scala files, if I reference a type that needs to be imported, I get the popup telling me to press Alt+Enter to see a list of candidates for importing. I can see all the right candidates, but when I click on one or select it and press "Enter", nothing happens...I have to manually type out the import statement. This feature works as expected for Java files in the same project - I press Alt+Enter, choose the candidate from the list, and an import is automatically added at the top. Scala is the only language that is broken.
I am using IDEA version 2017.1.2 with Scala plugin 2017.1.15.