I've had my current chair since 2020 but luckily haven't had that issue. I tend to lean to one side a bit more than the other and the armrest on the favored sid

I've had my current chair since 2020 but luckily haven't had that issue. I tend to lean to one side a bit more than the other and the armrest on the favored side is slightly looser. It can likely be fixed by tightening some screws but I haven't tinkered with it.