PaperSelect with selected=0

[beastmst]

I have an array as selectOption=[0,1,2,3]

when the selected value is 0, it is not selected...

any idea why?
where

pageArray = [0,1,2,3]
page = 0,

      <PaperSelect 
           @options={{pageArray}} 
           @label="Page" 
           @selected={{page}} 
           @onChange={{action (mut page)}} 
        as |pageNo|>     
          {{pageNo}}
      </PaperSelect>

[joukevandermaas]

Seems that this is the case for any "falsy" value, e.g. the boolean value false also has this effect.