In Minecraft 1.20.1, camels used the same system as boats for preventing players from facing a certain direction by clamping yaw to a specific arc every tick. However, the fix for MC-259475 removed this system from camels rather than fix the core issue.

As a result, boats still exhibit the same yaw restriction clamping issue as camels. By rotating fast enough (which can be done with high mouse sensitivity or a trackpad), the player can rotate clockwise and jump from yaw 105 to yaw -105. This rotation is jarring for players, as one can reasonably expect that camera rotation would stop no matter the speed.

My suggested fix would be to apply the yaw restriction in a way that does not allow the yaw to wrap around (-180 to 180 and vice versa) and thus get clamped to the other side (towards -105 to towards 105 and vice versa). Another fix would to take the same approach as with camels and remove the yaw restriction for boats entirely.