I own 15 other twisty puzzles and never had one pop on me even one time. I have owned this for about 3-4 days. It popped the very first time I used it and I had to put it back together having never put a popped cube together and without any videos showing how to do it. I got it put back together and figured out how to solve it pretty quickly having already (mostly) mastered the Square-1. Its fun with the extra layer of difficulty.
Problem is I felt like I needed to be very gentle with it. And after about 5 or 6 solves it popped on me again. Not a huge deal to put it back together but I don't want to have to go through this every few solves. Based on another review here it sounds like a design flaw. I know that they super glued something to fix theirs but whatever it was was censored out in the review so I am not sure what they did.
I am thinking maybe I should probably look for another version of the Square-2 without a design flaw. Which means I would also not recommend this.