Python shell 'Idle' paints fonts abnormally too large

I noticed this the first time in 0.4.9-RC-35-g3eb03ef
and it's so abnormally too large, that I can not imagine that I simply overlooked this in earlier tests (this could speak for a regression)

0.4.9-RC-35-g3eb03ef__Python_3_4_4_idle_largeFonts.png
vs.
2K3_SP2_eng.png

idle_largeFonts.log

Both: Python 3.4.4 and 2.7.15 are affected the same way.