This appears to happen for all parts. If I select a component on the schematic canvas and Command-E (on mac) to view the Library part, the library part looks entirely different than when I drop the part on my Project canvas. This does not affect my workflow since my project schematic canvas has a usable schematic part, but feels unexpected.
I tried this for the following parts and they all behave the same way:
0480371000
FE1.1s
STM32L082KBU6