Am I the only one that if a character is not described immediately after their introduction I make up a random headcannon for the character and it stays that way forever?

I have a similar issue-- if I know what the author looks like via a picture or other media, 9/10 that's who I'm imagining in my head as the protagonist. It doesn't matter how the author describes the character. To me, Kvothe isn't a red-haired kid-- he's a middle-aged, Rick-Rubin-looking Pat Rothfuss. Which makes it all the more awkward when he meets Felurian... 😭

Besides that, I actually prefer authors NOT to describe any of their characters too much. Give me one or two key traits about them, and let my imagination fill in the rest of the gaps.