Click on PM name in project overview opens mail with undefined address - and logs out user in certain cases

If the system setting runtimeOptions.frontend.tasklist.pmMailTo is active, the PM name in the rows of task and project overview should be linked with mailto: and the mail address of the PM.

In task overview this works, in project overview the mailto is set to "undefined".

This needs to be solved.

Also when you click on the mail address of a PM in the project overview of a not selected row, in Google Chrome you will be logged out - yet not in Firefox.

If you click on the mail address of the PM in the task overview (selected row or not) you are not logged out. If you click on the mail address of the PM in the selected row in project overview, you are also not logged out.

Please check, if the logout is still a problem, when the undefined is fixed. If yes, please fix this too.