p-selectbutton breaks into two line when .p-fluid applied on the parent container

[qwadrox]

In the past there was a rule like this in _button.scss:

.p-fluid {
    .p-buttonset {
        display: flex;
        
        .p-button {
            flex: 1;
        }
    }
}

without this the button is going to be in two line when p-fluid is on:
https://primeng.org/selectbutton

Just added this in the browser on the docs's site:
class="card flex justify-content-center p-fluid"