Unique stash tab should have slots for Foulborn uniques

In many ways the Foulborn uniques are separate items from the vanilla version, in much the same way that the heist replica uniques are. It makes sense to have extra slots in the unique stash tab for each Foulborn unique, just like replica uniques currently have. The way it is now you have to decide which version you want in your unique tab, or buy a whole extra unique stash tab. Seems like this is an easy thing for devs to implement.

https://www.pathofexile.com/forum/view-thread/3871467/page/1