Can't see draw debug string, help!

On my side 4.18 it working perfect with this code:

https://i.imgur.com/RvTxIos.png

here result

https://i.imgur.com/N2nLO4q.png

I think on your bp problem can be with text location. Try different locations - in my case this is weapon hit from Simple Trace by Channel - I’m just working on other things with it.

Working for sure.

ps. here result with text and sphere:

https://i.imgur.com/nJuK3zy.png