Magma and SoulSand /setblock bug

Hey!

I've found bug when replacing magma block with soul sand and vice versa, with command /setblock. 

Magma block under water does "bubble column" wich pulls you down. Soul sand under water does "bubble column" wich pushs you up. When you replace magma block with soulsand using command, then the "bubble columm" still pulls you down.