Bit of a weird one.
In ArcMap 10.6:
SDE Polygon Feature showing national region data - Symbology is based on Name field, giving 6 different unique values. No coded domains are present.
Works great on ArcMap.
Arcgis server 10.6:
Published the MXD as a service, viewing the service in the arcgis online viewer. Only 2 of the regions are being
symboloised. All other regions are grouped under "other" (see attached picture). If i press ungroup, the NAME field is recognised and applies the 6 values to their seperate unique values, giving duplicate unique value catagories and duplicating in the legend.
What i've tested:
Recreated the feature and imported symbology - same issue.
Changing the value field - same issue.
Not symbolising the regions - all regions are visible.
Different data - using smaller polygons, I wasn't able to reproduce the issue with smaller polygons.
Any known bugs about symbology on publishing or limited by polygon size?