App Icon Does Not Appear in Dock/Taskbar

[xmha97]

Hi, app icon does not appear in dock/taskbar:

[Philipou]

I have the opposite issue, i'm on kde plasma and when auto launching after boot and minimized, the app icon appears in the taskbar AND in the secondary icons space on the right. I think it should not show up in the taskbar if it launches minimized. Relaunching fixes it tough.