Multiple keys in a DRM license

Hello, I’m working on a web-based application that uses DRM playback with EME APIs.
I receive from a playready server a DRM license that contains several keys associated with several keyIDs.
It seems that on a recent LG TV, the device add only one key from the license (that contain several keys) when calling MediaKeySession.update()

Does WebOS EME implementation supports having multiple keys in a single license?