[chownie]

There's an NPC who walks you to the pokemart and gives you a potion. For me that dialogue was something like "You receive a !" and it then said "You place it in the 23 pocket" -- seems related?

[Redster]

Similarly, May gives me "8" when I think she gave pokeballs?

[theowaway213456]

Yep that's the first time I noticed it. The pocket was also numbered for me as well