Cant use healers, talk to NPCs (Any of them) cant throw pokemon using hotkey, pokemon never capture, cant battle to use pokeball in battle to test capturing that way. Pokemon disappear from inventory. withdrawing from PC places in inventory, log out then in and they disappear again.

Spawners work, even setting to aggressive AI doesnt initiate battle though.

This only happened right after I rebuilt Kanto entirely in 3D to be playable and it messes up. Re-installation doesnt work, removing other mods doesnt work (itll break world anyway with other mods active for blocks etc if i remove them) yesterday everything worked fine and all of a sudden, the entire pixelmon mod spazzed out and doesnt work AT ALL.

Oh, and googled every issue separately .. the only advice is to reinstall ... which i have, multiple times but that doesnt work. nothing works. pixelmon clearly is active somehow when I open the world but nothing works, nothing can be interacted with and is now just a way to spawn eye candy in the world without any real use or purpose .... which is the opposite of what this mod was intended to be used for ..

Technic?

I created a new profile but when I entered the world, all custom placed NPCs were gone. Seems to have fixed issue for now but im NOT replacing all NPC in the entire world everytime this bug happens ....

had to choose new starter though and all pokemon were lost which is utter shit ... thanfully im still developing the world but gameplay tests need to happen at various points of the development process.

You are using probably the Technic Launcher - this will not be fixed.

Im using Titan launcher. Its sort of been fixed as I posted above but was extremely crapping myself if it was gonna have to be scrapped lol.

I ran into the same issues, DO NOT use anything else except the pixelmon launcher or vanilla minecraft launcher. and if you decide to make a custom pixelmon then the whole pixelmon dev team will not help you with anything.