Taskbar Icon Disappears

Which application has this issue?

Perhaps that's a duplicate of:

http://tweaker.userecho.com/topic/1050648-multiple-instances-of-edge-dont-have-an-icon-when-grouping-is-disabled/

sorry for late reply.

no its different. when i said dissapear i meant unpins.

let me explain again:

it happens with chrome, some chromium builds in fact with programs that can seperate by tabs.

in grouping, when I check DONT GROUP, it works but when i close program icon unpins from taskbar. icon doesnt dissapear but unpins. for example, when i launch chrome from desktop shortcut i can see chrome icon in taskbar, but when i close chrome the icon unpins. then i have to restart explorer to see pinned chrome icon.

i have tried with the latest stable and beta builds. it happens again.

p.s. i have deleted duplicated taskbar shortcuts in windows explorer taskbar pinned item path.

Are you using virtual desktops? I've seen similar issues when switching between virtual desktops on Windows 10.

I could not reproduce it. Can you please provide exact reproduction steps?

If you can provide a demonstration video, that would be great.

No, Im not using virtual desktops.