RFR: 8273138: BidirectionalBinding fails to observe changes of invalid properties

[Michael Strauß]

On Tue, 7 Sep 2021 18:50:18 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> I think that restoring the existing behavior to fix this regression is important, and needs to be done regardless of what we might do in the future.

This PR does that.

-------------

PR: https://git.openjdk.java.net/jfx/pull/614