Please also contact the PWD Bureau of Engineering and Construction, Right of Way Management 238-3651. Also review Section 5610 of the Calif State Streets and Highway code and Section 12.04 of the Oakland Municipal code as this my be the fronting property owner issue to repair.

It is right in front of a city magnolia tree

Then it is the city's job to repair. FYI PWD crews cannot use asphalt to do any sidewalk repair they are required by there own rules to use concrete. Call the PWD 238-3651 number.