RFR: 8237602: TabPane doesn't respect order of TabPane.getTabs() list

[Ambarish Rapte]

On Wed, 29 Apr 2020 09:58:21 GMT, Jeanette Winzenburg <fastegal at openjdk.org> wrote:

> 
> 
> didn't look closely, just wondering why you need a system test for this?

The system test file `TabPanePermuteGetTabsTest` was added to address exact similar kind of issue
[JDK-8222457](https://bugs.openjdk.java.net/browse/JDK-8222457).  The current issue
[JDK-8237602](https://bugs.openjdk.java.net/browse/JDK-8237602) is just another case of same type. So it seems good to
add a new test with similar existing tests. I myself had fixed the previous issue, Can't remember why did I not
consider of a unit test then ��.

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PR: https://git.openjdk.java.net/jfx/pull/201