Hi I cannot reproduce it with the following code:
```
pip list | grep mxnet
mxnet (1.3.0b20180826)
```
```
Python 2.7.13 (default, Dec 18 2016, 07:03:39)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import mxnet as mx
>>> data = mx.sym.var('data')
>>> weight = mx.sym.var('weight')
>>> input_dim = 1
>>> output_dim = 1
>>> embed = mx.sym.Embedding(data, weight, input_dim, output_dim,
>>> sparse_grad=True)
>>> embed
<Symbol embedding0>
>>> embed = mx.sym.Embedding(data, weight, input_dim, output_dim,
>>> sparse_grad=False)
>>> embed
<Symbol embedding1>
```
[ Full content available at:
https://github.com/apache/incubator-mxnet/issues/12465 ]
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