the key id is missing in the detailed description Reproducible: Always
Created attachment 78984 [details] the key id is missing in the detailed description
Created attachment 78985 [details] Sourcecode of the Mail
You are most likley missing gpg-agent connectivity which produces exactly the same behavior for me. Try launching kleopatra and if the self test dialog does not pop up with an error directly go to settings -> perform self test.
(In reply to Samuel Suther from comment #2) > Created attachment 78985 [details] > Sourcecode of the Mail could you give infos asked by andreas please ?
With gnupg 2.1 the gpg-agent is started on demand by gnupg. So I think it is sensible to just mark this issue as resolved upstream.