When launching a pinned Firefox profile shortcut from the Windows taskbar, why does Firefox open a separate taskbar group/icon instead of attaching to the existing pinned profile icon like Chrome does?

I use multiple Firefox profiles and create separate desktop shortcuts for each profile using Firefox’s built-in profile shortcut option. I then pin each profile shortcut to the Windows taskbar so I can launch them independently. The issue is that when I click one of the pinned profile icons, Firefox opens a new separate taskbar group/icon instead of attaching the window to the already pinned taskbar item for that specific profile. For example: * I pin Profile A and Profile B separately to the taskbar. * When Profile A is already open and I click its pinned icon again, Windows creates another Firefox taskbar button/group instead of reusing the existing pinned Profile A button. * Google Chrome profiles do not behave this way on Windows — each profile stays grouped with its own pinned taskbar icon as expected. Is this a known limitation/bug with Firefox profiles on Windows taskbar integration, or is there a way to make Firefox profile shortcuts behave like Chrome profile shortcuts?