I tested the above JNLP and interestingly, the first time I ran the JNLP I got the same results as you (MDI only). The second time and thereafter, however, both layers are visible.
I tested the above JNLP and interestingly, the first time I ran the JNLP I got the same results as you (MDI only). The second time and thereafter, however, both layers are visible.