Please find the workaround below:
Workaround 1:
Please clear the slipstream cache using the below command:
mysql -ujboss -p$(grep mysql.jboss /etc/sysconfig/JunosSpace/pwd | awk -F= '{print $2}') build_db -e "delete from UserPreferenceState where stateName = 'slipstream-user-preferences'"
If the issue persists, please check if the issue is happening for some users only on the Junos Space. If it is a matter of only a few users, you can try deleting and re-creating the user on Junos Space to check if that helps.
If not, please contact JTAC support via a ticket to check this issue.