Language settings for Spell Check are not respected in Contacts, Calendar, Tasks and Notes
It seems that language settings for Spell Check are effective only in Mail but not in Contacts, Calendar, Tasks and Notes.
I have selected to use also Czech language for Spell Check and it works when composing e-mails, but in Contacts, Calendar, Tasks and Notes there are is only English used for Spell Check (i.e. non-English word are underlined as wrong).
The issue manifests in Evolution 3.30.5 (3.30.5-1.fc29).