qiskit/releasenotes/notes/0.45/fix-cu-assign-parameters-fb...

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---
fixes:
- |
:class:`.CUGate` will now behave correctly during calls to :meth:`.QuantumCircuit.assign_parameters`.
Previously, it would cause various odd errors, often some time after the initial circuit assignment.
See `#7326 <https://github.com/Qiskit/qiskit/issues/7326>`__, `#7410 <https://github.com/Qiskit/qiskit/issues/7410>`__,
`#9627 <https://github.com/Qiskit/qiskit/issues/9627>`__, `#10002 <https://github.com/Qiskit/qiskit/issues/10002>`__,
and `#10131 <https://github.com/Qiskit/qiskit/issues/10131>`__.