Pycharm not displaying wide Dataframe in Jupyter Notebook
This is a PyCharm bug and it still has not been resolved in the latest (2017.3) version.
Only 1D dataframes are shown as expected, multidimensional dataframes are shown as a horizontal line.
You can vote this issue in IntelliJ's issue tracker: https://youtrack.jetbrains.com/issue/PY-25931