'su lyx' changes file access privileges

[Pavel Sanda]

On Sun, Sep 27, 2020 at 04:31:24PM +0200, paolo m.  wrote:
> >  Here it is for example
> >  $ umask
> > 22
> > 
> > Kornel
> 
> Umask is the same for both users: 
> % umask
>  002
>  
> 
> % grep -i umask /etc/zshenv
>   umask u=rwx,g=rwx,o=rx 

Does umask output changes if you invoke su with '-', i.e.
su - user2 
?
Pavel