Deleting/Inserting instance for MultiParm became incorrect when the parameter is Operator Path

[fblangrt]

When the sub-parameter of a multiparm is operator path, delete or insert instances in the middle of the list will result in a wrong order. Like the pictures show: I click "Remove an Instance" for the first instance of the multparm parameter.

The geometry input of the cube should be removed, however, it remains and the next one - the sphere is removed.