Hi!
I experience the same bug on my MacBook (white plastic from 2008 😉 ).
It’s a 2.2 GHz Intel Cor 2 Duo, 4GB Ram, Graphic Chipset GMA X3100 (144 MB VRam).
Iannix runs flawlessly on my MacBook Pro (Unibody 2010, they already have an actual graphics card…)
Other than those funky triangles it runs nicely!
Regards!