Is this common?
I know a woman who recently typed as IEI but I strongly believe her to be LIE. All my interactions with her point to Si PoLR and Ni creative, and her Te is pretty much always "on." She has stronger reactions to Ne than I do, which I'd believe to be Ne-demonstrative. She does the same thing the other LIEs I know well do in observing closely how I interact with others to look for and memorize Fe "cues," like relying on it naturally isn't something she cares or knows how to do. Also tells me I'm being "rude" when I get the slightest bit playful, which seems like Fi-seeking and it's something I get a lot from the LIE who visits my LSE brother regularly, lol.
I was wondering how often this sort of mistyping occurs. I imagine plenty of LIIs mistype as IEEs at some point and some EIEs probably mistype as ILIs, etc.