Blurry Telegram icon (pixmap is chosen wrongly)
According to Telegram developers,
Telegram provides an array of pixmaps with different sizes and the applet takes the biggest one and downscales it instead of just using the most appropriate one.
Telegram cannot also just supply an icon name, because
Since tdesktop generates icon on the fly for the counter, the only way is to supplying pixmaps.
I'm not a Telegram developer: I'm posting here just because I've been told to. Relevant Telegram Desktop issue