Good evening! when giving share to web map, the road symbol that has double dash, presents the error: Layers symbol will be downgraded. Can't use double or triple dashes?
This is correct in the sense that symbols using multilayer symbols are not support symbologies on the web feature layer. the symbol is then downgraded to a simple symbol that is supported in the web feature layer. Only options are to accept the downgraded symbology when the layer is published or change the layer's symbology in ArcGIS Pro before publishing.
Is this a possible enhancement in future? I was a little surprised to find that even a railroad track symbol wasn’t supported on the web?
There is an enhancement request - ENH-000087498 - that is marked as "Under Consideration" so that bodes well. Hopefully a future release introduces this capability.