Slowing Hex can't be upgraded if all spirit slots are filled

[Frightstare]

As title says, if you have enduring spirit and want to upgrade to Slowing Hex and all your spirit slots are full, even if by upgrading it slots aren't maxed, you can't buy it.

I don't know how to explain it, so I will just add a video showing it​

 

[Khanzy]

Must be because you're changing a green item into a purple item it gets dodgy.

 

[Giamiester]

you must either have a spirit slot open or a flex slot open when upgrading, this recent patch is the first time they had a item upgrade from health into spirit so its a bit ackward to buy if your slots are all full

 

[Geneva]

Seems like the item system doesn't understand a green slot (and consequently, a flex slot) will be freed once Slowing Hex is bought. I hope this gets fixed soon since it wastes at least 250 souls to sell Enduring Spirit.