When trying to type accented Greek characters (e.g. typing <��><��>) in a TextField, instead of getting <��> I get <����>. 
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.