I had a similar problem, so I'm posting my solution in case it helps someone facing the same issue related to Laravel Livewire events.

In my case, none of the commonly suggested solutions worked, such as removing data-dismiss from submit button, adding aria-bs-backdrop="false", add wire:submit.prevent to form action.. etc.

The solution was simply to add wire:ignore.self to the Bootstrap modal HTML element. For example:

 <div class="modal fade" id="newtargetModal"
       tabindex="-1" role="dialog"
       aria-labelledby="newtargetModalLabel" wire:ignore.self>