cd $variable has an unexpected behaviour

bug: When cd'ing to a variable of the form ~/path/to/dir, ion evaluates this as cd $HOME/~/path/to/dir

code:

let awesomeconf = '~/.config/awesome'
echo $awesomeconf
cd $awesomeconf
pwd

expect:

~/.config/awesome
/home/name/.config/awesome

got:

~/.config/awesome
failed to set current dir to /home/name/~/.config/awesome: No such file or directory (os error 2)

kernel: linux5.4

version: 63d1bf76