dep wrote:

> before i file a bug report, i want to investigate to make sure that it's
> not something in my configuration or the way protonmail itself works.
> there's too much work for too few people in tde for me to take it to them
> until i've made sure it's not something i'm doing or that a third party is
> doing. i asked here because i thought there might be some obvious box to
> tick or untick that i'd missed.

Just check the raw content of the mail by pressing "v".

It is also possible that encrypted mail is shown as attachment. 

regards