QuantumFramework, Diagram attribute of QuatumCircuitOperator is not working properly [closed]

I'm working on wolfram cloud notebook to simulate Discrete-Time Quantum Random Walk on hypercube. But, in the QuatumCircuitOperator, I found an unexpected behaviour. Here is my code:

PacletInstall[ResourceObject["https://wolfr.am/11ftY6W2s"]]
Needs["Wolfram`QuantumFramework`"]

n = 4;
d = 4;
m = Ceiling[Evaluate[Log[2,Evaluate[n]]]];
m = Evaluate[m];

posn = QuantumState["Register"[n]];
coin = QuantumState["Register"[m]];

list =Table[x,{x,m}]
qc = QuantumOperator[{"C","X"->{m},Delete[list,m]}]
qc["CircuitDiagram"]

coin_op=QuantumCircuitOperator[{QuantumOperator["H"->list],QuantumOperator["X"->list],QuantumOperator["H"->{m}],QuantumOperator["H"->{m}],QuantumOperator["X"->list],QuantumOperator["H"->list]}];
coin_op["Diagram"]

Here, last line just prints "coin_op[Diagram]" string in stead of the circuit diagram, however when I change the code like:

coin_op=QuantumCircuitOperator[{QuantumOperator["H"->list],QuantumOperator["X"->list],QuantumOperator["H"->{m}],QuantumOperator["H"->{m}],QuantumOperator["X"->list],QuantumOperator["H"->list]}]["Diagram"]

It prints the circuit diagram, so how can I resolve this issue ? Thanks for the help.