That’s a good observation & I too have seen this behavior in Unity, so I’m familiar with the issues.
I tried it with my setup and with a solidify set to about 0,1m, basically, no coins fell through the bottom (a few bounced out, but that’s because I had made them very bouncy!) I tried setting the solidify thinner, but didn’t get as good results. I suppose ideally one could add the solidify modifier and then scale to get it to fit the box as tightly as without.
Thanks for the idea.
