Bug: Security Trimming using Update Personal Web Parts permission

Scenario

• You have disallowed Update Personal Web Parts on a site
• You have enabled Update Personal Web Parts on a page within the site
• The page uses SPSecurityTrimmedControl with PermissionsString="UpdatePersonalWebParts"

Issue

• The item does not appear on the page even though they have permissions on the page
• This is a MS bug due to the SecurityTrimmedControl referring to the Site level permission instead of the Page level permission

Resolution

• You will need to use another trimming mechanism until MS fixes this bug.