switch ( theShapeType ) {
case TopAbs_EDGE:
case TopAbs_FACE:
- case TopAbs_SHELL:
case TopAbs_SOLID:
return SMESH_Gen::GetShapeDim( theShapeType ) == theHypothesis->GetDim();
+
+ case TopAbs_SHELL:
+ // Special case for algorithms, building 2D mesh on a whole shell.
+ // Before this fix there was a problem after restoring from study,
+ // because in that case algorithm is assigned before hypothesis
+ // (on shell in problem case) and hypothesis is checked on faces
+ // (because it is 2D), where we have NO_ALGO state.
+ // Now 2D hypothesis is also applicable to shells.
+ return (theHypothesis->GetDim() == 2 || theHypothesis->GetDim() == 3);
+
// case TopAbs_WIRE:
// case TopAbs_COMPSOLID:
// case TopAbs_COMPOUND: