Problem: Blog access right once modified (e.g. members right changes to Viewer mode from author mode),
it is not effective immediately, instead it will take effective10 minutess later.
Answer: When you make a change to the security in the widgets, it does not happen instantaneously
Every 10 minutes a background task runs to update the membership access in blogs from the communities,
If currently community member is author and business owner changed to viewer role,
it take up to 10 minutes to be effective and it is by design, for performance consideration to reduce back-end database system load.