If you have many apps installed and you increase the number of columns it may happen that the + button at the bottom right overlaps the icons not allowing you to start the apps below, to avoid this problem maybe you could think of moving the + button in the top bar
If you have many apps installed and you increase the number of columns it may happen that the + button at the bottom right overlaps the icons not allowing you to start the apps below, to avoid this problem maybe you could think of moving the + button in the top bar