Problem adding jars to project Lib in 12.1

Upgraded to 12.1 this morning.  In a Gradle project, I wanted to add a new lib assocated with the project.  I tried making a lib then adding the jars one at a time.  I tried adding the jars each as seperate libs.  None of this worked until I added the entrie directory.  I'm not sure if this is a product of the Gradle build or a bug in 12.1