first, I hide channel windows while maintaining prv windows

Code:
alias F8 {
  scon -a toggletabs %hidden
  if (%hidden == $null) set %hidden 1
  else unset %hidden
}
alias -l toggletabs {
  var %x = window $iif($0,-w,-h), %y = 1
  %x "Status Window"
  while ($chan(%y)) {
    %x $v1
    inc %y
  }
} 


then when I click

F11 /scid -at1 close -m
or
F12 /close -m

the new prv windows come up non-maximized

the same happens if I click F8 and make channel windows appear again, they appear non-maximized