qiskit/releasenotes/notes/1.2/fix-sabre-releasevalve-7f9a...

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fixes:
- |
Fixed an edge case in :class:`.SabreLayout`, where in rare cases on large
devices and challenging circuits, the routing would fail. This was due to the
release valve making more than one two-qubit gate routable, where only one was expected.
Fixed `#13081 <https://github.com/Qiskit/qiskit/issues/13081>`__.