I Think this is a bug that should be fixed in the ivy.core
See `at ch.ivyteam.ivy.dialog.execution.DialogRuntimeLogicHelper.getMethodSignatures(DialogRuntimeLogicHelper.java:151)`ch.ivyteam.ivy.dialog.execution.DialogRuntimeLogicHelper.getMethodSignatures(DialogRuntimeLogicHelper.java:151)`
Please open a support request for it or file directly a new JIRA issues if you have access to it.