Map and chart layers no longer share same default style instance. Related to Issue [WTI-1339]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@10511 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: 71279ccdb82c0e8e0350971fa8023d1bb658d563Former-commit-id: 11d67ca1c5c0fd1e34f731e57e1458f56e32ceec