GWC: tile services not available for workspaces

If global services if disabled, calls to gmaps service into workspaces returns "No service: ( gmaps )"

http://server/geoserver/myworkspace/gwc/service/gmaps?layers=ws:layer&zoom=6&x=16&y=31&format=image/png - http://server/geoserver/myworkspace/gwc/service/gmaps?layers=ws:layer&zoom=6&x=16&y=31&format=image/png