Closing due to a lack of feedback.

I'm not familiar with the issue. I'll look at it when I have some spare time.

Sorry, but I don't speak Chinese, and I wasn't able to understand the text with Google Translate. Please clarify the issue/suggestion in English.

Unfortunately 7+ Taskbar Tweaker can't solve this currently. It's relevant to the following post, except that the other behavior is desired there (having the window icon, not the pinned icon):

https://tweaker.userecho.com/topics/294-never-combine-hide-label-vs-dont-combine-grouped-buttons-in-regard-to-taskbar-icons

Duplicate topics for reference:

https://tweaker.userecho.com/topics/833-different-icons-for-unlabeled-and-ungrouped-items

https://tweaker.userecho.com/topics/250-application-icon-is-shown-instead-of-the-window-icon-when-icons-arent-grouped

Closing as a duplicate of:

https://tweaker.userecho.com/topics/294-never-combine-hide-label-vs-dont-combine-grouped-buttons-in-regard-to-taskbar-icons

Closing as a duplicate of:

https://tweaker.userecho.com/topics/294-never-combine-hide-label-vs-dont-combine-grouped-buttons-in-regard-to-taskbar-icons

Here you go, enjoy:

https://github.com/m417z/7-Taskbar-Tweaker

Announced here:

https://rammichael.com/7-taskbar-tweaker-is-ten-years-old-today

It's a different issue. You're using an old insider build of Windows 10 version 20H1. 7+ Taskbar Tweaker supports build 18963 (and maybe newer builds), while you're using 18895. Unfortunately I can't support all insider builds since it's a moving target, it's a lot of work already to only support the latest build.