Last time I got a reply support said that Windows doesn't provide the API but is this still true and true for Windows 11? I do see plenty of thumbnail button APIs btw
https://docs.microsoft.com/en-us/windows/win32/api/shobjidl_core/nf-shobjidl_core-itaskbarlist3-thumbbaraddbuttons
It's bad that I cannot pause or skip track on Spotify on extended taskbar. One of my only issues with DP