Simple Hierarchical model fails

With n_samples=100 the inferred overall mean with KLpq is much better, but for KLqp I get the same results:

1000/1000 [100%] ██████████████████████████████ Elapsed: 51s | Loss: 26.828
Using <class 'edward.inferences.klpq.KLpq'>:
[ 0.13855419]
[ 0.09777226  0.19409294  0.29982021]
1000/1000 [100%] ██████████████████████████████ Elapsed: 33s | Loss: -2617.888
Using <class 'edward.inferences.klqp.KLqp'>:
[ 0.]
[ 0.09611346  0.20162852  0.29795927]