I had the same problème until maintenant. The nouveau Taskbar paramètres for grouping/ungrouping n'a pas work.
Avant Windows Mise à jour, that introduced "Combine taskbar boutons and hide labels" setting, boutons toujours been grouped.
Après the mise à jour, boutons toujours been ungrouped and the setting "Combine taskbar boutons and hide labels" did rien.
Moreover, taskbar layout behaviour was strange and buggy après the mise à jour. Sometimes there was plenty of space, but apps were hidden under [...] bouton, sometimes boutons sur le right side have had strange width, etc.
I accidentally found comment fix this problème. Il y avait DWord clé NoTaskGrouping dans le Registry under this chemin:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
I définissez le valeur for this clé to 0 and redémarré explorer.exe. And suddenly ungrouped taskbar started to behave properly and "Combine taskbar boutons and hide labels" setting started to work (yay!). Maintenant Je peux group/ungroup la barre des tâches boutons!
J'espère this helps quelqu'un.
Presumably, this setting somehow interferes avec the nouveau updated Windows 11 paramètres (i.e. "Combine taskbar boutons and hide labels").