Bugzilla importer: search page breaks after import

After doing a Bugzilla import, and clicking 'Find issues' to view the imported issues, one gets the following error in the left panel:

An error occurred whilst rendering this message. Please contact the administrators, and inform them of this bug. Details: ------- java.lang.UnsupportedOperationException: getProjects() not implemented in com.atlassian.jira.security.SubvertedPermissionManager at com.atlassian.jira.security.SubvertedPermissionManager.getProjects(SubvertedPermissionManager.java:28) at com.atlassian.jira.issue.search.searchers.impl.SearchContextSearcher.getVisibleProjects(SearchContextSearcher.java:212) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.velocity.runtime.parser.node.PropertyExecutor.execute(PropertyExecutor.java:111) at org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:302) at org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:157) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175) at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:307) at org.apache.velocity.runtime.parser.node.ASTAndNode.evaluate(ASTAndNode.java:89) at org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpression.java:45) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:68) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230) at org.apache.velocity.Template.merge(Template.java:256) at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:450) at com.atlassian.velocity.DefaultVelocityManager.getEncodedBody(DefaultVelocityManager.java:76) at com.atlassian.velocity.DefaultVelocityManager.getEncodedBody(DefaultVelocityManager.java:60) at com.atlassian.velocity.DefaultVelocityManager.getEncodedBody(DefaultVelocityManager.java:55) at com.atlassian.jira.issue.search.searchers.impl.AbstractIssueSearcher.renderEditTemplate(AbstractIssueSearcher.java:103) at com.atlassian.jira.issue.search.searchers.impl.SearchContextSearcher.getEditHtml(SearchContextSearcher.java:152) at com.atlassian.jira.web.action.issue.IssueNavigator.getSearcherEditHtml(IssueNavigator.java:591) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:61) at webwork.util.InjectionUtils.invoke(InjectionUtils.java:52) at webwork.util.ValueStack.findValue(ValueStack.java:426) at webwork.util.ValueStack.findValue(ValueStack.java:175) at webwork.view.taglib.WebWorkBodyTagSupport.findValue(WebWorkBodyTagSupport.java:61) at webwork.view.taglib.BasicPropertyTag.doStartTag(BasicPropertyTag.java:54) at org.apache.jsp.includes.navigator.filter_002dform_jsp._jspx_meth_webwork_property_9(org.apache.jsp.includes.navigator.filter_002dform_jsp:724) at

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