Finally have way to bring back windows after i3 restart and are not visible. ...

Finally have way to bring back windows after i3 restart and are not visible.  Use transparency ($mod+Mod1+z, $mod+Mod1+x).

i3/config

@@ -161,8 +161,8 @@ bindsym $mod+Shift+s sticky toggle;exec notify-send 'sticky windows toggled'
 # window transparency adjustment (and alias to restart compton)
 bindsym $mod+Mod1+z exec transset-df -a --min 0.20 --dec 0.20
 bindsym $mod+Mod1+Shift+z exec transset-df -a --min 0.1 --dec 0.1
-bindsym $mod+Mod1+x exec transset-df -a --inc 0.20
-bindsym $mod+Mod1+Shift+x exec transset-df -a --inc 0.1
+bindsym $mod+Mod1+x exec transset-df -a --inc 0.20 --max 0.99
+bindsym $mod+Mod1+Shift+x exec transset-df -a --inc 0.1 --max 0.99
 bindsym $mod+Mod1+c exec --no-startup-id "pkill compton; compton -b"
 
 # focus the parent container