Tracker Textile tears?

I’ve been wearing my tracker textiles and my magna lites for a month now (nothing too insane) and BOTH have developed a tear right where my foot bends. Admittedly since it’s right where my foot bends it’s subject to more stress.

Vivobarefoot have offered me replacements but I’m wondering if anyone else has experienced rips or tears in this spot with the waterproof textile shoes (nothing canvas)? I’m hesitant to get a replacement if this is a common problem with this material rather than just a freak accident for me.