I remember having one before. Binded it to my F3 to see the item inventory of all heroes ingame.
For some reason you can't bind it anymore and would have to resort to clicking "Show Items" on the Spectator Scoreboard instead.

And then as I'm watching MDL Macau 2019, I noticed that the Item Inventory is now a shield icon on the upper right besides the Net Worth, XP and Win Probability.

Can we somehow bind this to a key again? Thanks.