I confirm I also have this bug with Spotify.
If I launch from the unity panel, it often shows a blank icon. If I fully exit Spotify and launch it in the same way (from the unity bar) it then works and "merges" with the launcher.
The blank icon is clickable and does bring up Spotify.
I confirm I also have this bug with Spotify.
If I launch from the unity panel, it often shows a blank icon. If I fully exit Spotify and launch it in the same way (from the unity bar) it then works and "merges" with the launcher.
The blank icon is clickable and does bring up Spotify.