no runtime error when using weather without permission

when I try call any function from module
Communications

without permission
<iq:uses-permission id="Communications"/>

there is a runtime error
Error: Permission Required
Details: Permission for module 'Toybox.Communications' required

and OK, but when I use
weather.getCurrentConditions

without
<iq:uses-permission id="Positioning"/>

no error but some values (observationLocationName, observationLocationPosition etc.) are null!