Ah I was able to recreate it. Just load alpine twice. So it seems you are loading it twice somehow. Either via 2 scripts (in different places) or perhaps also in your compiled app.js ?
I was also having the same issue, my functions were calling a twice, there was a silly problem. I searched for the alpine package import in my laravel project i found that my one of the laravel package had already imported the alpine library and i had imported it in my html's head when i removed one of the imports it was working fine