Board Game Arena

Hello,

I have played the game three times on BoardgameArena, and there is something I still don't understand:
when I buy an item from the shop, sometimes I draw it on the next turn, sometimes.
From what I understood from the rules, those items are always draw on the next turn, since there are on top of the draw pile:

Prepare the following round:

...

3. Collect all the cards in your playing area, shuffle them then
place them face down under your draw pile.
Note: Items purchased during the round can now be found
above the cards you just shuffled.

Did I miss something?

basically, u only draw 5 cards per turn,so if ur draw deck already have 5 cards, and u bought a card,which would be placed at the BOTTOM of ur draw deck. then next turn u won't draw the card u bought last turn. And the card will be the top card of the draw deck.

Ah ok, object bought are placed at the bottom of the deck, not the top as I was explained the first time I played the game irl.
That explains everything.