There are instructions how to remove self intersections, but nothing about their creation and avoidance. I run 'raster to polygon' using 'simplify polygons' in ArcGIS pro 2.63 and 'repair geometry' has to repair nearly all of the resulting polygons due to self intersections and this still doesn’t prevent ‘dissolve’ from crashing because of invalid topology. XY tolerance is set to 0.5 m and the raster resolution is 2 m. XY tolerance of 1 mm results the same. ESRI file.gdb is used.
What is ArcGIS doing and how to prevent self intersections?