`calc-size`+`round`: `Only 1 argument allowed, but 3 were passed`

[alecmocatta]

This:

height: calc-size(fit-content, round(up, size, 1px));

gives this error:

Error: Only 1 argument allowed, but 3 were passed.
    ╷
301 │   height: calc-size(fit-content, round(up, size, 1px));
    │                                 ^^^^^^^^^^^^^^^^^^^^
    ╵

Instead I'm currently using a workaround:

height: unquote("calc-size(fit-content, round(up, size, 1px))");