Pycharm Matplotlib backend doesn't change from Agg

Matplotlib resorts to Agg no matter what backend I give it.

Things I've tried:

1. Changing the backend using matplotlib.use('Qt5Agg') and matplotlib.use('Qt5Agg', force=True)

import matplotlib
matplotlib.use('Qt5Agg', force=True)
import matplotlib.pyplot as plt

2. Changing the backend in the matplotlibrc file

## ***************************************************************************
## * BACKENDS                                                                *
## ***************************************************************************
## The default backend.  If you omit this parameter, the first working
## backend from the following list is used:
##     MacOSX Qt5Agg Gtk3Agg TkAgg WxAgg Agg
## Other choices include:
##     Qt5Cairo GTK3Cairo TkCairo WxCairo Cairo
##     Qt4Agg Qt4Cairo Wx  # deprecated.
##     PS PDF SVG Template
## You can also deploy your own backend outside of matplotlib by referring to
## the module name (which must be in the PYTHONPATH) as 'module://my_backend'.
#backend: Qt5Agg

Printing the backend gives the following:

print(matplotlib.get_backend())
print(matplotlib.is_interactive())

Qt5Agg
False

Yet when I try to use plt.show() the following error occurs:

UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.
plt.show()

I don't know wether this is a Pycharm or Matplotlib error. Hope you guys have any ideas

Shkar