I am trying to make minor edits to a polygon I manually created in ArcGIS Pro. When I use Edit → Modify → Edit Vertices, clicking and dragging a vertex moves the entire polygon rather than the individual vertex. Vertices are visible and selectable, and clicking a vertex correctly highlights the corresponding row in the Vertices table. However, dragging the vertex still moves the entire feature, and using the arrow keys after selecting a vertex also moves the whole polygon instead of just that vertex.
In troubleshooting, I noticed the geometry type was Polygon Z, so I exported the feature to a new feature class with Output has Z values = Disabled, resulting in a standard Polygon. I then ran Repair Geometry and Multipart to Singlepart, turned snapping both on and off, and confirmed that the layer is editable and stored in a file geodatabase. Despite these steps, vertex-level edits continue to behave like a feature-level move rather than a geometry edit.
At this point, the geometry is no longer Z-enabled, vertices are selectable, and the Vertices table updates correctly, but ArcGIS Pro still treats vertex drags as a move of the entire polygon
