Eclipse IDE - Open Call Hierarchy is empty/broken

Question

What should I do, if the \"Open Call Hierarchy\" is broken (empty for every method in a project)? It only shows the name of the method I wanted to see the call hierarchy fo

Answer 1

When you go to the eclipse bug report for this issue, somebody says, you should install over the Market place the Java 12 support.
When I installed it, it was working properly again