Submiting a challenge with glitch gives a different result everytime

@everyone: hi!

All is in the title. On the Quality Assurance and Testing with Chai section, any time I submit on a challenge with a glitch page, I have a different set of result (All tests should pass, You should choose the right assertion - isOk vs. isNotOk…)
So I keep hitting submit until I get eventually the validation for the challenge.

Anybody experiencing the same problem ?