Tongue bite, no. However, I have had a couple pipes be "flavorless" until broken in. I will say, most artisan pipes and certain factories, the pipe is different before break in, but not what you are describing. However, the couple of flavorless pipes were all factory, and likely due to the briar being still wet, not aged, or not from a good region. I won't name names, but I don't think those blocks of briar were ready for life as a pipe.