One of the biggest misconceptions about pansexuality is that pansexual people are somehow being transphobic by stating that they’re attracted to trans people, while bisexual people aren’t because they don’t see trans people as men or women. This is a dangerous and untrue myth! Pansexuality is attraction regardless of gender, so a pansexual person’s attraction to someone has nothing to do with whether they are trans or cis.
Similarly, the existence of pansexuality does not mean that bisexual people are only attracted to men or women. Bisexual people can be attracted to people with the same gender identity, and with different gender identities from their own – including non-binary people. The recently emerging term “bi+” now makes it even more explicit that bisexuality isn’t limited by binary definitions of gender and sexuality!
Source: Stonewall