Combobox issue with Windows 10

[Michael Berry]

After upgrading to windows 10, I've had many reports of users hitting this
issue (https://bugs.openjdk.java.net/browse/JDK-8132897) whereby clicking
any unfocused combobox in our application completely freezes it up.
(Interestingly, tabbing so the combobox is selected first before clicking
provides a workaround, but clearly this is not a good solution.) I haven't
been able to reproduce unfortunately, but it's certainly causing problems
our end and I can't imagine we're the only ones.

Has anyone else noticed this and been able to reproduce it more reliably? I
would look to contribute a fix, but not being able to reproduce makes it
pretty much impossible.

Michael