ofxPuppet issue on different computers

Hello all,

I’m working with a fun application that uses ofxPuppet to turn drawings into animations, like this:

I’m finding that this app works fine on some computers, but on others it jumbles up the puppet. The jumbling up happens when I add control points for ofxPuppet for stretching the texture.

Here is what it looks like on an “Early-2013” macbook pro running 10.11.5, with ofx 0.9.3:

Here is what it looks like on a “Mid-2014” macbook pro running 10.11.6, same binary made with xcode 7 and ofx 0.9.3 as the last:

I believe this has to do with an optimization/hardware acceleration in ofxPuppet that I don’t fully understand. Any ideas anyone?