Steps to reproduce

1. In a JdbcUserDirectory, create a user with an email
2. Maybe log in with this user one time to fill the user by email cache
3. Delete it
4. Recreate the user with the same mail and a different login
5. Try to update the password by the user interface "new password"
6. You receive a mail with the token
7. On updating the password you have the following error:

   Users are not modifiable !
   org.ametys.core.user.InvalidModificationException: Users are not modifiable !
   	at org.ametys.plugins.core.user.UserDAO.editUser(UserDAO.java:223)
   	at fr.ametys.onisep.ideo2.plugins.collect.users.ChangePasswordAction.act(ChangePasswordAction.java:92)
   	at org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode.invoke(ActTypeNode.java:125)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
   	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
   	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
   	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
   	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
   	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
   	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
   	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
   	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
   	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
   	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
   	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
   	at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
   	at org.ametys.runtime.servlet.RuntimeServlet.service(RuntimeServlet.java:582)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
   	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
   	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
   	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
   	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
   	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
   	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
   	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
   	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:375)
   	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
   	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
   	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
   	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
   	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
   	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   	at java.base/java.lang.Thread.run(Thread.java:833)

   User is still in the cache by mail.

I'm not sure that steps 5 to 7 are native in the CMS.