unfortunately, yes. it can happen time and time again. vary your flavors and drink beverages so your tongue wont get super saturated with flavor.
i have a certain flavor that i enjoy so much, i can get vapers tongue off of it quite easily now. as soon as i fill up the tank, i just hammer it down uncontrollably lol. by the second tank, i just look at the juice and say "why?"
i do think it happens with certain flavors more than others (perhaps more complex flavors?). and menthol seems to be damn near impervious to vapers tongue. my guess is because menthol is more of a sensation rather than a flavor. i mean, it is both, but its got that dual identity thing going on. my fiance literally vapes nothing but NLV Cold Creek menthol and she never complains of flavor loss. 2.5 yrs of hammering away at that same menthol and still no flavor loss.