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<code>DAGCircuit.substitute_node_with_dag()</code> does not handle DAG-level variable declarations

bugSomething isn't workingSomething isn't working

Status: Open.

#15509 In Qiskit/qiskit;

· arthurostrauss opened on Jan 6, 2026

plot_state_qsphere Phase Anchor is sensitive to scipy.linalg.eigh noise, causing arbitrary rotation of symmetric states

bugSomething isn't workingSomething isn't working

Status: Open.

#15493 In Qiskit/qiskit;

· dmeliksetian opened on Jan 2, 2026

QPY does not maintain the original bits when loading subcircuits

bugSomething isn't workingSomething isn't working

Status: Open.

#15482 In Qiskit/qiskit;

· gadial opened on Dec 28, 2025

QASM3 failing when using observables with more qubits than used by the circuit.

type: feature requestNew feature or requestNew feature or request

Status: Open.

#15481 In Qiskit/qiskit;

· gnietof opened on Dec 26, 2025

WinError 32 during using qiskit.visualization.pass_manager_visualization in qiskit

bugSomething isn't workingSomething isn't working

Status: Open.

#15472 In Qiskit/qiskit;

· dmeliksetian opened on Dec 23, 2025

Allow PUBs as input to generate_preset_pass_manager

type: feature requestNew feature or requestNew feature or request

Status: Open.

#15471 In Qiskit/qiskit;

· ritajitmajumdar1 opened on Dec 22, 2025

<code>Isometry</code> is phase-incorrect for <code>[-1,0]</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#15465 In Qiskit/qiskit;

· Cryoris opened on Dec 18, 2025

<code>get_registers</code> only sees registers added using <code>add_register</code>, and not <code>input_dict</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#15461 In Qiskit/qiskit;

· lmarti-dev opened on Dec 17, 2025

Enable <code>gridsynth</code> as default Clifford+T synthesis algorithm

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

Status: Open.

#15458 In Qiskit/qiskit;

· Cryoris opened on Dec 16, 2025

·  

2.4.0

Improve the Clifford+T compiler pipeline

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

performance

Status: Open.

#15457 In Qiskit/qiskit;

· Cryoris opened on Dec 16, 2025

·  

2.4.0

Benchmarks for FTQC pipelines

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

Status: Open.

#15456 In Qiskit/qiskit;

· Cryoris opened on Dec 16, 2025

·  

2.4.0

Allow caching Clifford+T synthesis results

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

performance

Status: Open.

#15455 In Qiskit/qiskit;

· Cryoris opened on Dec 16, 2025

·  

2.4.0