Variables via EL are not in UTF-8

Camunda 7 Topics
1

Hi. We use Camunda 7.17 in WildFly 26.

When we read and save Variables via the Java-API all values are read/saved correctly in UTF-8. But when we use an expression the Umlaute are destroyed:
image

This is the underlying expression:
#{execution.getVariable(“kurzbezeichnung”) != null ? kurzbezeichnung : “Keine Informationen zum Objekt vorhanden”}

Do we have to set something in the standalone.xml or in the Engine Java-Class?