Hey Sean L,
I have the problem that sometimes the debug visuals show up but most of the times they don’t. I have to start and stop play constantly and maybe 1 in 10 times the debug visuals show up. I recorded a video to show when it does not show up: UE 4.19 - AI Perception not showing in Debugger - YouTube
As you can see I’m toggling the EQS and Perception options with my numpad but nothing is showing. The AI to the left has the AI Perception sight sense and sometimes I can see the radius of it’s sight but most of the times not. Here is another run when everything is working: UE 4.19 - AI Perception sight is never lost - YouTube
It has been like that for me for several versions already but with the latest it seems worse. Before I got it to show up like every second or third time.