Hi brinkcor,
Thank you reply quickly,
Yup, You talked that reminds me. I supported some plugin conflicts that caused this problem, I need to disable them, then enable them one by one to figure out what happened.
I had the same problem, If I log in as Administrator, It will display the toolbar on the top of the backend and the front page.
If I log in as a Subscription or Non-Admin Role, the toolbar cannot display on the front page.
query-toolbar-notwork
no-script-error
no-toolbar-entry
