Expected behavior

When disabling the "Global settings > Display > Animation" setting, when opening a mail, no animation should play.

Actual behavior

Opening a mail results in a fade-in animation, with the message contents appearing progressively (the duration is around 0.5s-1s).

Steps to reproduce

1. Disable the setting "Global settings > Display > Animation"
2. Open a message
3. Observe a fade-in animation

Environment

K-9 Mail version: 5.200

Android version: 6.0.1

Account type (IMAP, POP3, WebDAV/Exchange): IMAP, if it matters

Other users have complained about this behavior on a mailing-list: https://www.mail-archive.com/k-9-mail@googlegroups.com/msg03953.html

Thanks for your help!