Hi, sorry for the late reply. the bug #2 you mentioned is easy to fix. However the bug #1 is not really a bug but it's just an empty function that i haven't filled in after you suggested to add Vanish/ non Vanish feature. (it's not easy to track down which slot had been added by which item, and then to remove it and shift another slots along with attached item up to fill in the slot has been removed)
So, i may add the function in future when i have free time however currently i don't have enough of time for it
I will upload another version to fix #2 bug soon
✩⚫꒳⚫✩ ~ have a good day