View is not applying for only one user and everyone else is viewing the correct view.
The user preference of that user is overriding the view.
This issue is arising because of the user preference is overriding on the view.
Go to sys_user_preference table.
On name search for the table name where the view is not applying.
On Value search for the view he is viewing currently.
Put the user's name on user column.It will show you some records for that user.
Delete those records .