RFR: 8248381: Create a daemon thread for MonocleTimer

Sat Jun 27 14:12:34 UTC 2020

On Fri, 26 Jun 2020 23:53:21 GMT, John Neffenger <github.com+1413266+jgneff at openjdk.org> wrote:

>> It looks simple enough for a single reviewer. Since it is in Monocle, @johanvos will probably want to review it.
>
> Note that this is a regression error that is not present in JavaFX 14, so it would be good to fix it before JavaFX 15
> is released.

The regression was caused by the fix for [JDK-8176499](https://bugs.openjdk.java.net/browse/JDK-8176499). See PR #117.

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PR: https://git.openjdk.java.net/jfx/pull/256