Few things:
1) You are showing a jumplist, and not the "recent items" menu. The setting that controls the count is called "Max items in jumplists" or "Максимальное количество элементов в списке переходов".
2) There is no room for 30 items in the menu. You need to make the menu taller by changing "Minimum menu height" or "Минимальная высота меню"
3) The jumplists are controlled by the system and there is also a system limit to the number of items that the system keeps there. You need to look in the taskbar properties for that limit.
1) You are showing a jumplist, and not the "recent items" menu. The setting that controls the count is called "Max items in jumplists" or "Максимальное количество элементов в списке переходов".
2) There is no room for 30 items in the menu. You need to make the menu taller by changing "Minimum menu height" or "Минимальная высота меню"
3) The jumplists are controlled by the system and there is also a system limit to the number of items that the system keeps there. You need to look in the taskbar properties for that limit.