I'm actually not sure if this is a real bug, or if I'm simply not doing something right...<_<'
Okay, so I thought I'd try to make some bomb upgrade items that could be put anywhere and collected in any order (like the room type), but also make the bag on the subscreen progressively larger as you collect them (like the Bomb Bag items can do).
So I edited 4 bomb bag items, as follows:
Bomb Bag (05): level set to 1, max of 5 bombs
Bomb Bag (10): level set to 2, max of 10 bombs
Bomb Bag (15): level set to 3, max of 15 bombs
Bomb Bag (20): level set to 4, max of 20 bombs
All 4 bags having the "upgrade when collected twice" flag checked. So every time you'd grab a "Bomb Bag (05)" item, it'd increase your max by 5 bombs.
Sounded like a good idea, until I actually tried it out. 😛
I started the quest with a max of 0 bombs, and set up a shop selling the "Bomb Bag (05)" item.
The first Bomb Bag (05) I bought gave me 5 max bombs, as expected.
The next, and every subsequent, Bomb Bag (05) gave me a max of 20 bombs...it upgraded all the way to the end of the chain. o_O
So...is this intended, or is it only supposed to go one level at a time? I'm not quite sure...