When trying to type accented Greek characters (e.g. typing <΄><α>) in a TextField, instead of getting <ά> I get <΄α>.
If I type <΄><΄> I get <΄΄> and when I type only <΄> I get <> (nothing is typed) as expected.
I can succesfully type the accented character in an editor and copy+paste it into the TextField.

Any time, I type <΄> the keyCode at com.sun.glass.ui.View#notifyKey is always 0. I think the keyCode should be 59 the first time.

It fails with jdk 8u20, 8u25, 8u40(ea) and works with 8u11.

P.S.: In contrast with older similar issues, speed of typing doesn't seem to matter and alt+tabbing to other windows and back doesn't seem to affect it.