IMPORTANT UPDATE Fixed the problem that the mod can't run on the server side.
Potion Mixing 0.1.1 for Minecraft 1.20.5-1.20.6
1 Bug fixed. Starting from this version, all status effects, except for Instant Health and Instant Damage, will be replaced by the higher-level version of the same status effect when mixed (if the levels are the same, the status effect with the longer duration will replace it) This means that duplicate status effects will not be displayed below the potion.
Initial release of Potion Mixing for Minecraft 1.21 on Modrinth.