It’s the second day since the raid came out and the issue with the Summon Jade Serpent Statue has not yet been fixed. It does now however remove the previous statue when you summon a new one, which is a step in the right direction, but the new statue won’t help you heal if you do not manually remove the previous statue yourself… How can this not be an issue Blizzard fix ASAP?
For people who want a quick solution to this until Blizzard fixes the issue, use this macro to remove statue before casting a new one: /click TotemFrameTotem1 RightButton