Using Unity 5.2.3. All brushes are very large - too large. Even the smallest brush is too large at it’s smallest size to be any use to do detailed terrain adjustments when working in a small area.
Is there a control in any of the settings to get the brushes back to a manageable size.
Have tried uninstalling and re-installing Unity.
Just tested with Unity5.6.6 and it seems fine… I can edit a single heightmap cel with the tiniest brush.
Are you sure you made your terrain high enough resolution? You can look at the resolution in the gear settings panel of the Terrain inspector… the field called Heightmap Resolution.
Don’t upgrade your project unless you make a FULL BACKUP or unless you’re using proper source control, as you cannot go back.
Heightmap resolution is 4097
And the brush and the cursor are not locked together. They are quite far apart.