No OMEMO indication in Adium
I don't get any indication about an encrypted session when using OMEMO – my window title stays the same. My conversation partner (with Pidgin) gets the nice "(OMEMO)" added in his window title. I'm using the pre-packaged Lurch4Adium from June 8th, so the lurch version should be 0.6.5.
Pidgin updates the window/tab title every time it's focused and loses focus, so if you simply never get the title can you please confirm it's not a bug with the Adium plugin first?
I'm afraid I can't confirm that myself. However, it looks like Adium needs a bit of extra work to get the window titles running. You can read the details in this comment by the plugin developer.
Thanks for bringing it up over there. It does seem to be an issue with Adium, but it should be easy enough to resolve.