при запуске lowriter в консоли такая ругань:

java.lang.UnsatisfiedLinkError: Can't load library: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-0.x86_64/lib/libawt_xawt.so
	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2630)
	at java.base/java.lang.Runtime.load0(Runtime.java:768)
	at java.base/java.lang.System.load(System.java:1837)
	at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
	at java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2442)
	at java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2498)
	at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2694)
	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2648)
	at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
	at java.base/java.lang.System.loadLibrary(System.java:1873)
	at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1399)
	at java.desktop/java.awt.Toolkit$3.run(Toolkit.java:1397)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.desktop/java.awt.Toolkit.loadLibraries(Toolkit.java:1396)
	at java.desktop/java.awt.Toolkit.<clinit>(Toolkit.java:1429)
	at java.desktop/java.awt.Color.<clinit>(Color.java:275)
	at org.languagetool.gui.Configuration.<clinit>(Configuration.java:77)
	at org.languagetool.openoffice.MultiDocumentsHandler.initLanguageTool(MultiDocumentsHandler.java:579)
	at org.languagetool.openoffice.MultiDocumentsHandler.initLanguageTool(MultiDocumentsHandler.java:573)
	at org.languagetool.openoffice.MultiDocumentsHandler.getCheckResults(MultiDocumentsHandler.java:195)
	at org.languagetool.openoffice.MultiDocumentsHandler.doProofreading(MultiDocumentsHandler.java:165)
	at org.languagetool.openoffice.Main.doProofreading(Main.java:78)
java.lang.NullPointerException
	at org.languagetool.openoffice.MultiDocumentsHandler.initCheck(MultiDocumentsHandler.java:640)
	at org.languagetool.openoffice.MultiDocumentsHandler.getCheckResults(MultiDocumentsHandler.java:196)
	at org.languagetool.openoffice.MultiDocumentsHandler.doProofreading(MultiDocumentsHandler.java:165)
	at org.languagetool.openoffice.Main.doProofreading(Main.java:78)
Exception in thread "Thread-24" java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit
	at java.desktop/java.awt.Component.<clinit>(Component.java:621)
	at org.languagetool.openoffice.MessageHandler$DialogThread.run(MessageHandler.java:159)

Помогает установка java-<версия>-openjdk. Т.е. java-openjdk-headless недостаточно.
Нужна библиотека:
/usr/lib/jvm/java-<maj_ver>-openjdk-<version>.<arch>/lib/libawt_xawt.so

Тут, конечно, вопрос. Поставить зависимость на java-openjdk или может можно перенести эту библиотеку в openjdk-headless?

В still такой проблемы нет.