I have a server-side callback that sets fill_alpha to zero to hide polygons not in the selected area but all polygons from all layers seem to be being forced to a low fill_alpha value (maybe 0.2 or so). I suspect this may be some artifact of the selection highlighting mechanism but in my code literally every fill_alpha value I am using is 0 but as soon as I select a polygon all the layers (renderers) of polygons go visible.
As soon as I deselect then everything goes back to hidden. I am trying to show some maps highlighting the selected area and having all other areas clear.
MY workaround is to kill the selection ``datasource.selection.indices = ``` and ignore the change event that triggers. Just wondering if there is anything else that can be done.