I was playing version 1.9 till earlier when i finally managed to get a hands on 1.9m. In 1.9 you can fuse/stack items through boxes but when i played again using the newly DL'ed 1.9m they wont fuse anymore, only stacking of orbs and clovers etc. you have to put them in your hero now to fuse
Edit:
So far i'm in chapter 4 in version 1.9m
These are some of the things i found out.
-non fusable items while in the box
- "Select User" Option from the vendor isn't working properly when the hero is also near the box and the vendor. Hero is always the buyer, can't switch to box.
2 minor things yet somehow irritating for me since i use them commonly.
I also found your dummy item "Magic Orb" in chapter 4 in the dig spot near the synthesizers.
The description says that i should report it to you immediately if ever i got that item since it was suppose to be a dummy one. I'll add some new ones as i progress through the game