<caster.l.w> placeholder not working

The <caster.l.w> placeholder does not return a proper value, it only returns <caster.l.w>, tested with the setvariable in the skill below, as well as directly in a message skill

Paper 1.21.1-105 and mythic mobs v5.7.2-SNAPSHOT/5202

return_staff_set_coordinates:
  Cooldown: 1
  Conditions:
  - crouching true
  Skills:
  - setvariable{var=caster.return_staff_x_coord;type=INTEGER;value=<caster.l.x>}
  - setvariable{var=caster.return_staff_y_coord;type=INTEGER;value=<caster.l.y>}
  - setvariable{var=caster.return_staff_z_coord;type=INTEGER;value=<caster.l.z>}
  - setvariable{var=caster.return_staff_world;type=STRING;value=<caster.l.w>}
  - message{m="Return target set to <caster.var.return_staff_x_coord> <caster.var.return_staff_y_coord> <caster.var.return_staff_z_coord> <caster.var.return_staff_world>"}