There's no icon because there's no "art" field coming in from the scope (at least in the telegram-latest snap case), you can check by doing
scopes-client clickscope ""
and looking at the results ( http://paste.ubuntu.com/23447173/ ), for example both system-settings and terminal have art but not telegram.
Will investigate more tomorrow why the art is missing.
There's no icon because there's no "art" field coming in from the scope (at least in the telegram-latest snap case), you can check by doing
scopes-client clickscope ""
and looking at the results ( http:// paste.ubuntu. com/23447173/ ), for example both system-settings and terminal have art but not telegram.
Will investigate more tomorrow why the art is missing.