New Login while Sequence is running

Hello,
i´m running a Labview-Operator-Interface which is executing a teststand-sequence.
This sequence is running parallel an executes from time to time a new seqeunce in "a new execution".
On the operator-interface are serveral functions which i want to make only executable for some users.
The problem ist, that after the parallel-sequence is running i have no more acces to the Login-Button ( it becomes greyed out).
So my question is: How can i execute a login with User/Password while a seqeunce is running?

I am using TS 3.5 and LV 8.2.1.
When i execute the default (untouched, unchanged) Operator-Interface from NI located in
C:\Programme\National Instruments\TestStand 3.5\OperatorInterfaces\NI\Simple\LabVIEW\Testexec.exe
then i have the problem also.
What i do:
- Run this Operator-Interface exe-file
- Click on "Open Sequence File" and select the sequence what i posted before.
- Click on "Test UUT"
- The Sequence begins to run and displays the first popup
But now the Login/Logout-Button is greyed and disabled.
This is what my problem is also in my customized UI.
What you say is, that your Login-Button is still normal and clickable with TS 4.0 ?
Attached a screenshot of the UI and the first-popup + the greyed Login-Button
Attachments:
screen.jpg ‏59 KB

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