Missing icon for pinned transmission-gtk

Help
,
1

Hello.

I installed Transmission (transmission-gtk) in Kubuntu and pinned it to a panel. But when I close transmission icon on the panel disappears and becomes default one. When I click on the icon Transmission starts and correct icon appears on the panel. I tried to unpin and pin again but it didn’t help. There is no problem with Transmission icon in the menu. And there is no problem with other pinned apps.

I don’t understand what special is about this icon. How do I check it?

2

This smells like a missing StartupWMClass issue, but I’ve never seen that specific one.

It would be better if you can send a video showing the issue.

3

Small question.Anything special to go for the gtk version?

Screenshot_20260320_200817
Screenshot_20260320_2008171920×1080 221 KB

4

Here is the video

https://1drv.ms/v/c/4c9184d440785530/IQBfMLyG727IRqw2IhQQZ3FzAbDOWl8C2JIGHoqGt2LlzDg?e=p5Xdkj