Effective1.21 for 1.18.2 Fabric doesn't seem to work correctly, all splashes look black, is this a bug?
Will 1.18.2 get an updated Effective version to 1.6 or above?

the newest Effective version relies on an API that is not available for 1.18.2. We unfortunately do not have LTS for any minecraft version, so I fear you'd have to update to at least 1.3 in order for the black splash bug to be fixed for you. I apologise for the inconvenience ^^'.