org.apache.felix.utils.properties.TypedProperties does not parse arrays correctly

org.apache.felix.utils.properties.TypedProperties does not parse arrays in OSGi configurations correctly.

While a single line config with

key=["val1","val2"] works fine

just adding a standard key value pair

key2=val2

has the consequence that the value for "key" is not parsed as an array anymore.

(see attached JUnit test to demonstrate the problem)