Javascript editor 'Save actions' remove trailing whitespace spaces from all lines is not working

I have been asked to report this issue here from https://bugs.eclipse.org/bugs/show_bug.cgi?id=565046.

Within Eclipse IDE I am using
File type = Javascript
Editor = Javascript
Window > Preferences > Javascript > Editor > Save Action > Additional actions > Configure > Code Organizing > Formatter
Tick Remove trailing whitespace checkbox
Select 'All lines' radio button option

Expected: The white space should be removed upon saving the file.
Actual: Upon saving the file I can see that trailing white space remains

This can be easily seen as I use SonarLint to highlight coding standards transgressions.

Thank you for your time.

Kevin

Eclipse Installation details:
Axis2 Tools 1.1.401.v201909051708 org.eclipse.jst.ws.axis2tools.feature.feature.group Eclipse Web Tools Platform
Buildship: Eclipse Plug-ins for Gradle 3.1.4.v20200326-1743 org.eclipse.buildship.feature.group Eclipse Buildship
Cloud Foundry Tools Core 1.2.3.v201805291812 org.eclipse.cft.server.core.feature.feature.group Eclipse Tools for Cloud Foundry
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Dali Java Persistence Tools - EclipseLink JAXB Support 1.4.202.v201903221940 org.eclipse.jpt.jaxb.eclipselink.feature.feature.group Eclipse Web Tools Platform
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Riproduci il problema tramite le impostazioni di Save Actions dell’editor JavaScript: abilita la rimozione degli spazi bianchi finali per tutte le righe, salva un file e verifica il risultato. Traccia l’integrazione di Save Actions e del formatter dell’editor JavaScript; il lavoro è completato quando, al salvataggio, gli spazi bianchi finali vengono rimossi da ogni riga, come previsto.