Tests

Fix atomic outputstream closed channels exceptions (and update JavaFX… #533

Job	Run time
OpenRewrite	2m 37s
Checkstyle	2m 43s
Markdown	7s
Modernizer	1m 31s
CHANGELOG.md	9s
CHANGELOG.md - only unreleased touched	17s
Database tests	2m 52s
GUI tests	2m 0s
Unit tests	6m 57s
Validate Gradle Wrapper	7s
Code coverage	57s
Find merge conflicts	5s
	20m 22s

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