print() doesn't work on python console with sklearn import (pycharm 2018.1, windows10)

Using a file with just these 2 lines:

   from sklearn.cluster import KMeans

   print('done')

'done' is printed correctly both in the python command-line and when run with the 'Run with Python Console' left unchecked in the run configuration.  However when I check the 'Run with Python Console' option, done is not printed.  print() does work when typed into the resulting console.

Commenting out the import also causes 'done' to be printed on the console.

I've tried restarting pycharm, no effect.