Since updating to Plasma 5.7.0, some apps are missing their tray icon in the systemtray. Instead they show the grey standard icon from the breeze icon set. Affected apps I have found are: All electron based app (e.g. the new Skype Alpha [1]), but also applications like the kaccessible tray icon. [1] https://community.skype.com/t5/Linux/Skype-for-Linux-Alpha-and-calling-on-Chrome-amp-Chromebooks/td-p/4434299 Reproducible: Always Steps to Reproduce: 1. Start the affected app. 2. Look at the task bar. Actual Results: Tray icon is replaced by grey standard icon. Expected Results: Show the normal application icon like in 5.6.x.
Fixed in next frameworks