I am digitizing polygons from an ortophoto. In the snapping options, I enabled 'topological editing' and 'avoid intersection' of the polygon layer. I digitized some not-adjacent areas and then made a large polygon to fill the gaps between the layers. It worked perfectly and I do not see any overlaps, but when I use the Topology Checker it finds overlaps. I know how to clean them with GRASS, but I would rather prefere digitizing without overlapping....How does it works, or is there a bug?
I am using QGIS 2.14.1.