The Buffer geoprocessing tool configured with flat end types and listed fields as dissolve type returns rounded ends when using projected coordinate systems.

Workaround

• In ArcGIS Pro, the correct buffer results only display when the No Dissolve option is selected for Dissolve Type.
• In ArcMap, if the line layer has a projected coordinate system, the workaround is to project the layer into a geographic coordinate system, and run the Buffer tool on the new projected layer.

Steps to Reproduce