→ Make sure you're on a mesh subtool (not a 3D primitive with "Make PolyMesh3D" unchecked).
→ Turn off Polish slider or reduce its value. zbrush dynamesh utility
✅ – DynaMesh respects symmetry if enabled. It can even fix asymmetrical topology. → Make sure you're on a mesh subtool
✅ – If you don’t want edges to close, use Polygroups and enable Groups by Polygroups . zbrush dynamesh utility