Find/filter windows via present windows not working

I’m on KDE 5.27.8 on a new system. For some reason I can no longer filter/search for windows after toggling “present windows” (Ctrl+F9 or Ctrl+F10). I type but the input does not appear to be recognized (i.e. nothing happens no matter which keys I press, even after pressing Ctrl+F). Any help is appreciated; I have not experienced any issues with the keyboard otherwise.