Hey thanks for the feedback!
Yeah I found there were times where the spacing wasn't quite right I think i needed a bit more robust logic on the spawning and spacing as I experienced this during testing.
To counter act it I tried to make the collision more forgiving but it still causes issue if they end up lined up perfectly on the Y axis.
This is only my second time playing with UE so just glad it ran to be honest!
I will add this to a current issues list on the page.
Thanks again!
*Edit*
I just watched your VoD on Twitch and I noticed that the highlight on the pugs didn't render either so something else has gone wrong there!
The pugs should have had a green highlight to make it more obvious what you wanted to collect.