diff -r 34def2630300 -r 4f8fa42aed07 src/toolsets/algorithmtoolset.cpp
--- a/src/toolsets/algorithmtoolset.cpp	Thu Jan 04 21:41:17 2018 +0200
+++ b/src/toolsets/algorithmtoolset.cpp	Thu Jan 04 22:42:01 2018 +0200
@@ -161,12 +161,12 @@
 
 			v.apply([&](Axis, double& a)
 			{
-				RoundToDecimals(a, config.roundPositionPrecision());
+				a = RoundToDecimals(a, config.roundPositionPrecision());
 			});
 
 			ApplyToMatrix(t, [&](int, double& a)
 			{
-				RoundToDecimals(a, config.roundMatrixPrecision());
+				a = RoundToDecimals(a, config.roundMatrixPrecision());
 			});
 
 			mo->setPosition(v);
@@ -180,7 +180,7 @@
 				Vertex v = obj->vertex(i);
 				v.apply([&](Axis, double& a)
 				{
-					RoundToDecimals(a, config.roundPositionPrecision());
+					a = RoundToDecimals(a, config.roundPositionPrecision());
 				});
 				obj->setVertex(i, v);
 				num += 3;