After an upgrade from Jira 6.4 to 7.0 to 7.13, the property key minyaa.jira.issue.workable causes an exception.

We have developed a small java class as property value named "de.coconet.jira.conditions.PMTaskNotClosedCondition". This class is part of one of our plugin jars.

by the way: I can't find Jira 7.13 in the "JRIA Release" dropdown.

Since version 7.13, each time someone logs time the following exception is thrown:

2020-02-17 09:28:16,996+0100 https-jsse-nio-8443-exec-113 WARN pawelg-cl 568x147980x2 enq1t8 192.168.248.115 /secure/CreateWorklog!default.jspa [c.a.j.c.workflow.bc.DefaultWorkflowController] java.lang.ClassNotFoundException: de.coconet.jira.conditions.PMTaskNotClosedCondition not found by fr.alkaes.minyaa.jira-plugin-minyaa-time [196]
2020-02-17 09:28:17,001+0100 https-jsse-nio-8443-exec-113 ERROR pawelg-cl 568x147980x2 enq1t8 192.168.248.115 /secure/CreateWorklog!default.jspa [c.a.jira.workflow.DefaultOSWorkflowConfigurator] Could not load class 'de.coconet.jira.conditions.PMTaskNotClosedCondition'
java.lang.ClassNotFoundException: de.coconet.jira.conditions.PMTaskNotClosedCondition
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1328)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1156)
at com.atlassian.core.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:79)
at com.atlassian.core.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:48)
at com.atlassian.jira.workflow.DefaultOSWorkflowConfigurator$LegacyJiraTypeResolver.loadObject(DefaultOSWorkflowConfigurator.java:130)
at com.opensymphony.workflow.TypeResolver.getCondition(TypeResolver.java:73)
at com.atlassian.jira.workflow.DefaultOSWorkflowConfigurator$JiraTypeResolverDelegator.getCondition(DefaultOSWorkflowConfigurator.java:92)
at com.alkaes.jira.common.workflow.bc.DefaultWorkflowController.isConditionApplicable(DefaultWorkflowController.java:360)
at com.alkaes.jira.common.workflow.bc.DefaultWorkflowController.isWorkable(DefaultWorkflowController.java:229)
at com.alkaes.jira.common.workflow.bc.DefaultWorkflowController.isWorkable(DefaultWorkflowController.java:224)
at fr.alkaes.myaatm.web.action.issue.ExtendedCreateWorklog.isWorkable(ExtendedCreateWorklog.java:239)
at fr.alkaes.myaatm.web.action.issue.ExtendedCreateWorklog.doDefault(ExtendedCreateWorklog.java:127)
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