Proton Mail iOS doesn't show custom contact names from Protons address book and it displays sender's self-configured name instead
Proton Mail on iOS is ignoring my custom contact names from the address book and just showing whatever the sender set themselves. Whether I label someone "Mom" or use their full name, the app completely skips it.
The web and desktop clients handle this perfectly, displaying exactly what I saved. This feels like a specific iOS bug (maybe Android aswell?)