I would say that when you take a new role there will inherently be a bit of a probationary period. It’s a new role that you haven’t done, and so your will be supervised to make sure you are capable. That’s not to say it’s like starting at a new job entirely, where your character isn’t known to the company already.
If you start in a position somewhere, and your new coworkers are hostile towards you, it’s because they suck and that’s not normal. I was hired at the same time as another employee at my current employer, and it was clear that the manager didn’t want either of us, but he was a shitty person. Everywhere else I’ve worked has been welcoming, but everywhere has a couple crappy people.