When wielding a bow in an off-hand slot the bow aims down when you pull back on it. The arrow shoots straight it's just the bow direction is incorrect. On latest 1.9 Snapshot
Environment
Windows 10 64Bit
4 gig Ram
32mb Graphics
2.2 Quad Core
Java 1.8.0_25
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This issue has been linked to the original bugreport: MC-88356. You can find or add further information on that report.
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