Using "construct matrix" in a subgraph operator causes error

Hi,

When I use the “construct Matrix” node in a new subgraph operator and I create the node in a visual graph I get this error.
I am using unity 2021.20b15.
I think this is a bug or is there a reason this node doesn`t work in a subgraph operator?

Just ran into the same issue in 2020.3.28
ConstructMatrix was the only operator I’ve found where its class name (MatrixFromVector4) doesn’t match the file name in which it is defined (ConstructMatrix.cs). I know this is a problem for MonoBehaviours, maybe also here. Haven’t found a workaround, though.

2021.3.31
Also have problems with construct matrix.
Sometimes this block even disappears from my graph.