When traveling through water in a boat while carrying a 2nd passenger (player or tamed mob), dolphins sometimes cross your path and knock out the 2nd passenger into the water. This was discovered multiple times while playing on SMP world. Happened with 2nd player and also while carrying tamed cat over water back to base in jungle biome. Cat was knocked out of the boat and proceeded to drown.

Is this working as intended or bug?

Bedrock 1.4.4.0 using touch screen classic UI.