Affects Version/s: Minecraft 19w04b, 1.14.4, 1.15 Pre-release 1
Fix Version/s: None
Intel Core i5-6500
NVIDIA GeFore GTX 1060 6GB
Left (main) hand with bow spins when holding shield and you left-click (hit) and instantly right-click (aim bow) after.
It also happens with no arrows in inventory.
It does not happen when you have [Main Hand: Right].
It does not happen with other items in offhand.
It does not happen when the hitting animation has finished already before you start right clicking the bow.