ArcGIS Pro 2.9.1
I downloaded a couple of FAA Sectionals as GeoTiffs from here and clipped them using the "Clip Raster" tool. I assigned the "NoData Value" field to 256. In the new GeoTiff the NoData area is displaying as white and not clear. In the Layer Properties under Raster Information, the NoData Value field has a value of 256. The symbology for both the original GeoTiff and the clipped GeoTiff is set to "Colormap". In ArcMap 10.2.1 the NoData shows up as clear.
I'm a little stumped at why the NoData is showing white. Anyone know of another setting somewhere?