wayland desktop mouse cursor size

Hello,

I'm having trouble with mouse cursor size. On my 14" 2650x1600 display,
the mouse cursor is about half a terminal character in height. The
wayland compositor I'm using, labwc, recommends to set the size with the
XCURSOR_SIZE environment variable, however this does nothing on my box.
I am not using moused with `moused_nondefault_enable="NO"` in rc.conf.

Anyone know how this works?

Best,
Alex