So in an attempt to make a Dual Wielding blade in Minecraft, where only when combined they would work quickly and effectively, I set the Offhand blade to reduce attack speed by 80% and the Mainhand blade to increase it by 450%. This worked fine, but the issue was that when using them in conjunction and then switching to another item on the hotbar, the 80% reduction wouldn't register and it would work just as fast as without it. If I was to take the Dual Wielding Blade off of the Offhand slot and put it back on, it would take effect though. Please fix this, it's probably an issue with attributes not updating when an item is switched. The video attached had me attempting other stats than listed but the effect is still the same.