The hotbar slots are only 8 when you see it, but selecting a stone slab will go to the 9th slot, which is the inventory button, which they forgot to remove the stone slab on the 9th slot. Maybe add a 10th slot for the inventory button or remove the stone slab in the 9th slot?
The hotbar slots are only 8 when you see it, but selecting a stone slab will go to the 9th slot, which is the inventory button, which they forgot to remove the stone slab on the 9th slot. Maybe add a 10th slot for the inventory button or remove the stone slab in the 9th slot?