Missing arrow symbol in scala type tooltip Follow

I have small but annoying problem with tooltips:

There is missing ⇒ character. It only happens when setting Editor -> Code style -> Scala -> Other -> "Replace '=>' with unicode symbol" is on.

I am using InteliJ 15.0.3 with Scala plugin 2.1.0 on Windows 10. I tried changing font but it does not help.