This change that leads to the application windows clubbed together would be both disturbing and taking a lot of time for several users. You would further have to hover the cursor over the main tile and afterward choose the needed window with the setting to upgrading the application windows missing. However, a lot of people also appreciated having all the windows shown in a separate tile in the taskbar for readily accessibility. It seems to be trouble for those users who like grouping the windows. You definitely would have to detect that different windows of an application are clubbed together in case you are one of them who have made the jump to Windows 11.
In Taskbar Settings, there’s No ‘Combine Taskbar Buttons’ Option.All Familiar Methods to Disable Taskbar Button Grouping Don’t Work in Windows 11.Windows 11 Doesn’t Display All Open Windows of an Application in Taskbar.