That doesn't turn off grouping, it turns off combining. Grouping puts taskbar entries from the same app next to each other. Combining turns multiple entries f

That doesn't turn off grouping, it turns off combining. Grouping puts taskbar entries from the same app next to each other. Combining turns multiple entries for the same app into 1 entry. To select a particular window, you have to hover over or click the combined entry - which causes large thumbnails of each of the combined windows to be displayed, then click the appropriate window thumbnail.