Attributes don't work in some cases

When making an item have a attribute like speed, It will not work if you switch it into your offhand then back into the mainhand, going to a different slot then back or dropping the item and picking it up again makes the speed work again. This affects creative and survival mode

Link to new video: https://1drv.ms/v/s!AgLrtrXcvZa6qH0_mS2qXbFB0atO?e=nB1wFs