Attack Player Only Hotkey doesn't work

In the previous patches before the last few recent patches I've been able to use the 'Attack Player Only' hotkey under the Movement category where you can only click/target on champions, but I have not been able to use this feature recently with the last couple of patches. I'm unsure if anyone else has been running into these issues, as I've tried to rebinding to different keys and reinstalling to no avail. If anyone can provide some guidance on this issue that would be awesome.

Thanks for your time!