Is it normal for Firebase A/B testing variant to keep changing on re-fetch?

Question

I have a Firebase A/B experiment running on Android, Experiment is based on a Remote config that has [A, B] values, What is weird is that sometimes when I fetch the value again from firebase I get a different one, for example first time I get "A" then third time it's "B" is this normal? like am I supposed to store the first value I get?