Unfortunately, this bug has been around for years. I'm afraid nobody
really knows how to fix it.
https://hub.qgis.org/issues/8002
For me the grass tool v.voronoi works great. You can find it in processing.
Raymond
On 23-03-17 20:47, Khandoker Maniruzzaman wrote:
Several years ago I tried to
Several years ago I tried to generate Voronoi polygons around a number of
points. I think I was using QGIS version 2.10. The result was not
satisfactory (Nearest Distance interpolation in raster gave better
results). There was one polygon with no generator point in it while an
adjacent polygon had
