To fix this, you can add this after line11 of file acshell.sh
LIST+=$(find /System/Applications -maxdepth 2 | egrep -i "\.app$" | grep -i "$QUERY")
Then it works for most of system apps.
But Catalyst Apps, like Podcast.app, still doesn't work. As their internal structures(Info.plist and icns files) are different from the AppKit apps.
I don't know how to fix this.