Filtering windows by title does not match substrings

[gerbal]

I often have a lot of windows with titles things like dragon-ball-x and super-duper-app. When searching for open windows, filtering with queries like ball or duper do not match substrings in window titles.

Expected Behavior:

1. super + /
2. enter ball
3. Launcher returns all windows with ball in the title like dragon-ball-x

Actual Behavior:

1. super + /
2. enter ball
3. no matching windows found. Hyphen separated substrings are not matched