Does uploading a paper to arxiv with the same title but different author list affect citations?
Search results on Google Scholar usually club together citations on different versions of the same article (see screenshot below). Moreover, since Google Scholar works with preprints, and preprint servers like arXiv have options to add or replace author names, in my opinion, this will not affect your citation count. However, make sure that when your paper gets published, the author list is updated in arXiv as well.