If you run a dedicated server with 2 or more players in a mobile project, then the built-in virtual joysticks of all players will control ONLY the first client. I created a new project and the error persisted. I don’t have the opportunity to check my project on a mobile device, so I can’t say if the problem exists only in the editor or if it is saved in the finished project. Reproducing the problem is not difficult. You need to create any mobile project and at startup enable the option “Run a dedicated server”. P. S. Sorry for my English. I am writing through a google translator.