Focus switch loop between window class (mod+y) windows

[tkf144]

To reproduce:

1. mod + y
2. mod + y
3. Click OK in the second window spawned

or:

1. mod + y
2. Focus window just spawned
3. mod + y

• In some cases the looping will cease and both will close when focus is switched to another window.
• In others, they remain and allow you to click OK in the first window spawned.
• Doesn't happen when -i #32770 is passed